[交通工程总论期末试题x]

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Part One --- Answer the questions in simple way ( 简答题 ) (每题 3 分 )

1.

What is t

Course series No. 000211 Grade No. 030461

2006 年度“交通工程总论”试题( A 卷) 姓名 学号 分数

Part One --- Answer the questions in simple way ( 简答题 ) (每题 3 分 )

1.

What is the objective of traffic engineering study ( 交通工程研究的目的是什麽 ) 答:交通工程研究的主要目的是保证交通安全,以及实现快速、舒适、方便、经济及与环境 相协调的客货运输。

2.

What is the difference between rate of flow and hourly volume ( 小时流率与小时流量有何区别 ) 答:小时流量是指一小时内通过观测断面的实际交通量。

 小时流率通常是将某连续时间段(小于一小时)内的交通量扩大为一小时得到的交通量。

 小时流率是放大的相对小时流量,小时流率一般大于小时流量。

3.

What are the definition of 85th percentile speed and its meaning in traffic engineering ( 百分之八 十五位车速的定义和在交通工程中的含义是什麽 ) 答:在一路段行驶的所有车辆中, 有 85%的车辆行驶速度在此速度之下, 只有 15%的车辆行 驶速度高于此值,交通管理部门常以此速度作为某些路段的最高限制车速。

4.

What are the leading and lagging phases ( 何谓先行和后滞相位 ) 答:先行相位是指当一方向车辆获得绿灯时,其对向仍禁止通行的相位分配方式。

 后滞相位是对正在运行的对象双方一方先禁止通行,而另一方继续给与绿灯的相位分配方 式。

5.

What is the effective green time ( 何谓有效绿灯时间 ) 答:实际绿灯时间、 黄灯时间中,除掉损失时间后,实际上用于通车的时间即为有效绿灯时 间。

6.

What is follow-up time ( 何谓随车时距 )

答:次要道路上, 前后两车保持的保证两辆或两辆以上车辆安全穿越主干道的最小平均车头 时距。

7.

What is critical lane (何谓关键车道)

8.

What is saturation flow rate ( 何谓饱和流量 ) 答:饱和流量是在车辆处于饱和车头时距的条件下,一小时通过的交通量。

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Course series No. 000211 Grade No. 030461

9.

Under what conditions is time mean speed equal to space mean speed ( 时间平均车速与空间平 均车速在什麽情况下相等 )

答:根据公式 2211111inniiiiidtTMSntntnndSMSntntt 等号成立条件为 ti=tj ( ij )即道路上所有车辆的地点车速均相等的情况下,时间平均车速等于 空间平均车速。

10.

Using diagram to show weaving areas of freeway. ( 用图表示高速路交织区 ) Crown line

L (<2500 ft.) 交织区示意图

Part Two --- Elaborate the following questions ( 详述下列问题 ) (每题 6 分)

1.

Describe the relationship between mobility and accessibility. Then, take Jing Jin freeway and Da Wang roadway as candidates to show their difference in terms of mobility and accessibility ( 描述 机动性与可达性之间的关系 , 并以京,津高速路和大望路为例加以说明 ) 答:机动性和可达性是出行的两个因素。

机动性注重的是出行过程的效率;可达性注重出行过程的方便程度。

 随着机动性的增加,可达性程度降低。

如京津高速, 由于全封闭、 全立交对车辆行驶的干扰小机动性较之其他道路高, 但通过它能 够直接到达目的地的能力下降了。

 而大望路道路两侧干扰严重车辆运行效率低, 但可达性好。

2.

Illustrate the difference between the two way stop and full way stop. (试说明二路停车和全路 停车之间的区别) 答:二路停车指一种用于主, 次路相交的无信号交叉口的控制方式, 次干道进口安装停车标 2

Course series No. 000211 Grade No. 030461

志牌, 主干道车流不受到限制通过路口, 次干道车流必须让位给主干道车流, 利用主干道车 流中的可接受间隙通过路口;全路停车则指等级相同道路相交的无信号交叉口的控制方式, 交叉口各进口均安装停车标志牌, 所有进入交叉口的车辆必须停下来按照先到先行原则通过 路口

3.

Illustrate the basic principles used for signalization of intersections in MUTCD. ( 叙述 MUTCD 中有 关在交叉口采用信号灯的基本原则 ) 答: 1. 交通流量原则;

行人与自行车原则;

学校穿行原则;

信号协调原则;

冲突原则;

路网原则。

4.

Describe the relationship between number of phases and the delay drivers experience at signalized intersection. ( 描述信号相位数与交叉口延误之间的关系 )

答:随着信号相位数的增加,交叉口一个进口方向上总延误时间增长。

List all factors affecting free-flow speed of freeways. ( 列出影响高速路自由流速度的因素 ) 答:影响多车道公路自由流速度的因素主要有:车道宽度,路侧净空,车道数及立交密度。

 Part Three --- Calculations ( 计算题 )

1.

Given the relationship between speed and density ( 已知速度与密度的关系 ) , (5 分 ) 70SD

(a)

Find the free-flow speed and jam density ( 求自由流速度和阻塞密度 )

(b)

Derive equations describing flow versus speed and flow versus density ( 给出流量 -速度,流量 - 密 度关系式 )

(c)

Determine the capacity mathematically ( 确定此时的通行能力 )

(d)

Sketch the speed-density, flow-speed and flow-density curves and indicate the congested and uncongested area. (绘出速度 -密度,流量 -速度,流量 - 密度曲线并指出拥挤区和非拥挤区 )

解:(a)由速度与密度关系式)(70DS知,自由流速度Sf =70 km/h ,阻塞密度Df =1/ = 125 v/km

将代入上式 得 DSv)(70DDv

)-70

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Course series No. 000211 Grade No. 030461

令 DDv 得: Dm= v/km

因此, 2188) 4

Course series No. 000211 Grade No. 030461

2.

With what minimum reaction time will the car not hit the stopped truck when this car runs at speed of 120 km/h and driver sees the stopped truck at distance of 200 meters far. The grade of roadway is zero and the coefficient of forward friction is . What will happen if the distance is 140 meters (when driver sees the stopped truck) assuming the other conditions unchanged and explain ( 一辆以每小时 120 公里行驶的汽车在 200 米处发现停靠在路上的卡车,请问,小车 司机最小的反应时间为多大时才不会撞到该卡车。道路纵坡为零且车轮与路面的粘着系数 为 。如果小车司机发现卡车时,距离卡车为 140 米,在其他条件不变的情况下,会发生什 麽并给出解释 ) (10 分 )

解:由题意可知: Si= 120 km/h, F= , G= 0 %, Sf= 0 km/h 根据方程 ) 此时, d= 200 m

可知反应即当反应时间小于等于时不会撞到该卡车

由于刹车距离为 (254222GFSSdfibm 所以当距离卡车为 140m 时开始刹车,无论反应多快都会撞上卡车。

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Course series No. 000211 Grade No. 030461

3.

The traffic volume of roadway is 720 vph and its headway is distributed in the form of exponential equation. Estimate: ( 已知某条路的交通量为 720 辆 /小时,且车队车头时距符合负指数分布, 求 (10 分 )

(1)

Number of headway whose value is no less than 6 second within an hour. (一小时内,车头时 距不小于 6 秒的车头时距个数)

(2)

两小时The number of the headways between 10 seconds and 15 seconds within two hours. 内,车头时距介于 10 秒和 15 秒之间的车头时距个数) 解: (1) V, T= 6 s, V=720 vph headways 217720)6()6ehPVhM (2) 两小时内交通量 Vvph

两小时

则,)]15()10([)1510()1510(hPhPVhPVhM ) the con ditio ns of a two-way stop in tersection as show n below. (已知二路停车交叉口的流量分布情况,如下图所示 )

Calculate the potential capacity of (计算可能通行能力) (10 分 )

1)

Eastbound left turn movement , with critical gap seconds and follow-up time seconds (向东 方向左转,其临界间隙为秒,随车时距为秒)

2)

Northbound left turn movement (No. 2), with critical gap seconds and follow-up

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Course series No. 000211 Grade No. 030461 time 3 seconds (向北方向左转,其临界间隙为秒,随车时距为 3 秒) 3)

Northbound through movement (No. 3) with critical gap 4 seconds and follow-up time seconds (向北方向直行,其临界间隙为 4 秒,随车时距为秒)

解:根据公式

)3600/()3600/(-1fxcxcxcxtvtvcxpxeevc

a) 为主要道路左转 50016 又 tc1=, tf1=

*651vvvvc

可得: 3600/(500)3600/(5001

eecpvph

为次要道路左转 vph *3212Ivvvvvc1311***12**5.05.05 250500.vph 02II2I2cccvvvvph

已知 tc2=, tf2=3s 3600/3(930)3600/(9302

eecpvph

为次要道路直行 vph *3213Ivvvvvc vph 2216**6543IIvvvvvc

II3I3cccvvvvph 此时 tc3=4s, tf3= 3600/(1280)3600/ 4(12803

eecpvph

5.

Based on the survey conducted at a busy bus stop, it is found that the probability of each bus

having a crash from 6:00am to 6:00pm is . The average volume of buses arriving at this stop from 6:00am to 6:00pm is 2500. Estimate the probability of having no less than 3 crashes from 6:00am to 6:00pm at this stop. (根据公交车站调查,发现公共汽车在早 6:00 至晚 6: 00 发生事故

的概率为。早 6: 00 至晚 6: 00 公交车流量为 2500, 计

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Course series No. 000211 Grade No. 030461

算从早 6:00至晚 6: 00公交车发生 3起及以上事故的概率) (5 分) 解:已知: p=, x=3, N=2500

利用!)1(! )!(!xe 入 ppxxNN入 xxNx

由于 pN

因此 2()1()0(1)3(1)3(XPXPXPXPXP

即从早 6:00至晚 6: 00公交车发生 3 起及以上事故的概率为。

北京工业大学 2006 年度“交通工程总论”试题( B 卷)

姓名 学号 分数

Part One --- Answer the questions in simple way ( 简答题 ) (每题 3 分 )

1.

What is the free flow speed ( 何谓自由流速度 )

2.

W

北京工业大学 2006 年度“交通工程总论”试题( B 卷)

姓名 学号 分数

Part One --- Answer the questions in simple way ( 简答题 ) (每题 3 分 )

1.

What is the free flow speed ( 何谓自由流速度 )

2.

What is the difference between AADT and ADT ( 年平均日交通量与平均日交通量有何区别 )

3.

What are the definition of 15th percentile speed and its meaning in traffic engineering ( 百分之十 五位车速的定义和在交通工程中的含义是什麽 )

4.

What are the protected left turn phase and permitted left turn phase ( 何谓保护型和许可型左转 相位 )

5.

What does the peak hour factor tell and what is its range in value ( 高峰小时系数反映了什麽 其 值落在什麽范围 )

6.

What is critical gap ( 何谓临界可接受间隙 )

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Course series No. 000211 Grade No. 030461

7.

What is warning sign Give two examples of it. ( 何谓警告标志 请举出 2 个例子 )

8.

What is saturation headway ( 何谓饱和车头时距 )

9.

If rate of flow equals to hourly volume, what does it indicate ( 如果小时流率与小时流量相等 ,

这说明什麽 )

10.

Using diagram to show merge and diverge areas of freeway. ( 用图表示高速路合流区和分流区 ) Part Two --- Elaborate the following questions ( 详述下列问题 ) (每题 6 分)

1.

Describe the relationship between mobility and accessibility. Then, take Jing Jin freeway and Da Wang roadway as candidates to show their difference in terms of mobility and accessibility ( 描述 机动性与可达性之间的关系 , 并以京,津高速路和大望路为例加以说明 )

2.

Illustrate the difference between the stop sign and yield sign. (试说明停车标志和让行标志之 间的区别)

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Course series No. 000211 Grade No. 030461

3.

Illustrate the basic principles used for signalization of intersections in MUTCD. ( 叙述 MUTCD 中有 关在交叉口采用信号灯的基本原则 )

4.

Describe the merit and demerit of traffic signal control. ( 描述交通信号控制的优缺点 )

5.

List all factors affecting free-flow speed of multilane highways. ( 列出影响多车道公路自由流速 度的因素 )

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Course series No. 000211 Grade No. 030461

Part Three --- Calculations ( 计算题 )

1.

Given the relationship between speed and density ( 已知速度与密度的关系 ) , (5 分 )

50SD

(a)

Find the free-flow speed and jam density ( 求自由流速度和阻塞密度 )

(b)

Derive equations describing flow versus speed and flow versus density ( 给出流量 -速度,流量 - 密 度关系式 )

(c)

Determine the capacity mathematically ( 确定此时的通行能力 )

(d)

Sketch the speed-density, flow-speed and flow-density curves and indicate the congested and uncongested area. (绘出速度 -密度,流量 -速度,流量 - 密度曲线并指出拥挤区和非拥挤区 )

2.

With what minimum reaction time will the car not hit the stopped truck when this car runs at speed of 120 km/h and driver sees the stopped truck at distance of 200 meters far. The grade of roadway is zero and the coefficient of forward friction is . What will happen if the distance is 140 meters (when driver sees the stopped truck) assuming the other conditions unchanged and explain ( 一辆以每小时 120 公里行驶的汽车在 200 米处发现停靠在路上的卡车,请问,小车 司机最小的反应时间为多大时才不会撞到该卡车。道路纵坡为零且车轮与路面的粘着系数 为 。如果小车司机发现卡车时,距离卡车为 140 米,在其他条件不变的情况下,会发生什 麽并给出解释 ) (10 分)

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Course series No. 000211 Grade No. 030461

3.

The traffic volume of roadway is 720 vph and its headway is distributed in the form of exponential equation. Estimate: ( 已知某条路的交通量为 720 辆 /小时,且车队车头时距符合负指数分布, 求 (10 分 )

(1)

Number of headway whose value is no less than 5 second within an hour. (一小时内,车头时 距不小于 5 秒的车头时距个数)

(2)

The number of the headways between 15 seconds and 20 seconds within two hours. (两小时

内,车头时距介于 15 秒和 20 秒之间的车头时距个数)

4.

Given the conditions of a two-way stop intersection as shown below. ( 已知二路停车交叉口的流 量分布情况,如下图所示 )

Calculate the potential capacity of (计算可能通行能力) (10 分 )

1)

Eastbound left turn movement , with critical gap 3 seconds and follow-up time seconds (向东

方向左转,其临界间隙为 3 秒,随车时距为秒)

2)

Northbound left turn movement (No. 2), with critical gap 4 seconds and follow-up time 3 seconds (向北方向左转,其临界间隙为 4 秒,随车时距为 3 秒)

3)

Northbound through movement (No. 3) with critical gap seconds and follow-up time seconds

(向北方向直行,其临界间隙为秒,随车时距为秒)

:北京工业大学 2007 年度“交通工程总论”试题( A 卷)

姓名 学号 分数

Part One --- Answer the questions in simple way ( 简答题 ) (每题 3 分 )

What is the objective of traffic engineering st 北京工业大学 2007 年度“交通工程总论”试题( A 卷) 姓名 学号 分数

Part One --- Answer the questions in simple way ( 简答题 ) (每题 3 分 )

What is the objective of traffic engineering study ( 交通工程研究的目的是什麽 )

What is the difference between rate of flow and hourly volume ( 小时流率与小时流量有何区 别)

What are the definition of 85th percentile speed and its meaning in traffic engineering ( 百分之 八十五位车速的定义和在交通工程中的含义是什麽 )

What are the leading and lagging phases ( 何谓前滞和后滞相位 )

What is the effective green time ( 何谓有效绿灯时间 )

What is follow-up time ( 何谓随车时距 )

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Course series No. 000211 Grade No. 040461

What is critical lane (何谓关键车道)

What is saturation flow rate ( 何谓饱和流量 )

Under what conditions is time mean speed equal to space mean speed ( 时间平均车速与空间 平均车速在什麽情况下相等 )

Using diagram to show weaving areas of freeway. ( 用图表示高速路交织区 ) Part Two --- Elaborate the following questions ( 详述下列问题 ) (每题 6 分)

Describe the relationship between mobility and accessibility. Then, take Jing Jin freeway and Da Wang roadway as candidates to show their difference in terms of mobility and accessibility ( 描 述机动性与可达性之间的关系 , 并以京,津高速路和大望路为例加以说明 )

2

Course series No. 000211 Grade No. 040461

Illustrate the difference between the two way stop and full way stop. (试说明二路停车和全 路停车之间的区别)

Illustrate the basic principles used for signalization of intersections in MUTCD. ( 叙述 MUTCD 中 有关在交叉口采用信号灯的基本原则 )

Describe the relationship between number of phases and the delay drivers experience at signalized intersection. ( 描述信号相位数与交叉口延误之间的关系 )

List all factors affecting free-flow speed of freeways. ( 列出影响高速路自由流速度的因素 )

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Course series No. 000211 Grade No. 040461

Part Three --- Calculations ( 计算题 )

Given the relationship between speed and density (已知速度与密度的关系 ),(10 分)70SD= x

(a) Find the free-flow speed and jam density ( 求自由流速度和阻塞密度 )

(b) Derive equations describing flow versus speed and flow versus density ( 给出流量 -速度, 流量 -密度关系式 )

(c) Determine the capacity mathematically ( 确定此时的通行能力 )

(d) Sketch the speed-density, flow-speed and flow-density curves and indicate the congested and uncongested area. (绘出速度 -密度,流量 -速度,流量 -密度曲线并指出拥挤区和非拥挤区 )

With what minimum reaction time will the car not hit the stopped truck when this car runs at speed of 120 km/h and driver sees the stopped truck at distance of 200 meters far. The grade of roadway is zero and the coefficient of forward friction is . What will happen if the distance is 140 meters (when driver sees the stopped truck) assuming the other conditions unchanged and explain (一辆以每小时 120 公里行驶的汽车在 200米处发现停靠在路上的卡车,请问,小车 司机最小的反应时间为多大时才不会撞到该卡车。道路纵坡为零且车轮与路面的粘着系数

为 。如果小车司机发现卡车时,距离卡车为 140 米,在其他条件不变的情况下,会发生什 麽并给出解释 ) (12 分)

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Course series No. 000211 Grade No. 040461

The traffic volume of roadway is 720 vph and its headway is distributed in the form of

exponential equation. Estimate: ( 已知某条路的交通量为 720 辆/小时,且车队车头时距符合负

指数分布, 求 (10分)

(1) Number of headway whose value is no less than 6 second within an hour. (一小时内,车头

时距不小于 6 秒的车头时距个数)

(2) The number of the headways between 10 seconds and 15 seconds within two hours. (两小

时内,车头时距介于 10 秒和 15 秒之间的车头时距个数)

Based on the survey conducted at a busy bus stop, it is found that the probability of each bus having a crash from 6:00am to 6:00pm is . The average volume of buses arriving at this stop from 6:00am to 6:00pm is 2500. Estimate the probability of having no less than 3 crashes from 6:00am to 6:00pm at this stop. (根据公交车站调查,发现公共汽车在早 6:00 至晚 6: 00 发生事故

的概率为。早 6:00 至晚 6:00 公交车流量为 2500 , 计算从早 6:00 至晚 6:00 公交车发 生 3 起及以上事故的概率) (8 分 )

内容提要: 2007 年度“交通工程总论”试题( B 卷)

姓名 学号 分数

Part One --- Answer the questions in simple way ( 简答题 ) (每题 3 分 )

What is the free flow speed ( 何谓自由流速度 )

What is t

2007 年度“交通工程总论”试题( B 卷)

姓名 学号 分数

Part One --- Answer the questions in simple way ( 简答题 ) (每题 3 分 )

1. What is the free flow speed ( 何谓自由流速度 )

What is the difference between AADT and ADT ( 年平均日交通量与平均日交通量有何区别 )

What are the definition of 15th percentile speed and its meaning in traffic engineering ( 百分之 十五位车速的定义和在交通工程中的含义是什麽 )

What are the protected left turn phase and permitted left turn phase ( 何谓保护型和许可型左 转相位 )

What does the peak hour factor tell and what is its range in value ( 高峰小时系数反映了什麽 其值落在什麽范围 )

What is critical gap ( 何谓临界可接受间隙 )

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Course series No. 000211 Grade No. 030461

请举出 2 个例子 )如果小时流率与小时流量相等

请举出 2 个例子 )

如果小时流率与小时流量相等

用图表示高速路合流区和分流

What is saturation headway ( 何谓饱和车头时距 )

If rate of flow equals to hourly volume, what does it indicate ( 这说明什麽 )

Using diagram to show merge and diverge areas of freeway. ( 区)

Part Two --- Elaborate the following questions ( 详述下列问题 ) (每题 6 分)

Describe the relationship between mobility and accessibility. Then, take Jing Jin freeway and

Da Wang roadway as candidates to show their difference in terms of mobility and accessibility ( 描 述机动性与可达性之间的关系 , 并以京,津高速路和大望路为例加以说明 ) 2. Illustrate the difference between the stop sign and yield sign. (试说明停车标志和让行标志 之间的区别)

Course series No. 000211 Grade No. 030461

Illustrate the basic principles used for signalization of intersections in MUTCD. ( 叙述 MUTCD 中 有关在交叉口采用信号灯的基本原则 )

Describe the merit and demerit of traffic signal control. ( 描述交通信号控制的优缺点 )

List all factors affecting free-flow speed of multilane highways. ( 列出影响多车道公路自由流 速度的因素 )

3

Course series No. 000211 Grade No. 030461

Part Three --- Calculations ( 计算题 )

Given the relationship between speed and density (已知速度与密度的关系 ),(5 分)50SD= x

(a) Find the free-flow speed and jam density ( 求自由流速度和阻塞密度 )

(b) Derive equations describing flow versus speed and flow versus density ( 给出流量 -速度, 流量 -密度关系式 )

(c) Determine the capacity mathematically ( 确定此时的通行能力 )

(d) Sketch the speed-density, flow-speed and flow-density curves and indicate the congested and uncongested area. (绘出速度 -密度,流量 -速度,流量 -密度曲线并指出拥挤区和非拥挤区 )

With what minimum reaction time will the car not hit the stopped truck when this car runs at speed of 120 km/h and driver sees the stopped truck at distance of 200 meters far. The grade of roadway is zero and the coefficient of forward friction is . What will happen if the distance is 140 meters (when driver sees the stopped truck) assuming the other conditions unchanged and explain (一辆以每小时 120 公里行驶的汽车在 200 米处发现停靠在路上的卡车,请问,小车 司机最小的反应时间为多大时才不会撞到该卡车。道路纵坡为零且车轮与路面的粘着系数

为 。如果小车司机发现卡车时,距离卡车为 140 米,在其他条件不变的情况下,会发生什 麽并给出解释 ) (10 分)

The traffic volume of roadway is 720 vph and its headway is distributed in the form of

4

Course series No. 000211 Grade No. 030461

exponential equation. Estimate: ( 已知某条路的交通量为 720 辆/小时,且车队车头时距符合负 指数分布, 求 (10 分)

(1) Number of headway whose value is no less than 5 second within an hour. (一小时内,车头 时距不小于 5 秒的车头时距个数)

(2) The number of the headways between 15 seconds and 20 seconds within two hours. (两小 时内,车头时距介于 15 秒和 20 秒之间的车头时距个数)

Given the conditions of a two-way stop intersection as shown below. ( 已知二路停车交叉口的 流量分布情况,如下图所示 )

Calculate the potential capacity of (计算可能通行能力) (10 分)

1) Eastbound left turn movement , with critical gap 3 seconds and follow-up time seconds (向 东方向左转,其临界间隙为 3 秒,随车时距为秒)

2) Northbound left turn movement (No. 2), with critical gap 4 seconds and follow-up time 3 seconds (向北方向左转,其临界间隙为 4 秒,随车时距为 3 秒)

3) Northbound through movement (No. 3) with critical gap seconds and follow-up time seconds (向北方向直行,其临界间隙为秒,随车时距为秒)

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