关于力矩的描述哪项是错误的()。 A.一个力施加于物体所产生的绕轴转动的作用称为力矩

题型:单项选择题 A1/A2型题

问题:

关于力矩的描述哪项是错误的()。

A.一个力施加于物体所产生的绕轴转动的作用称为力矩

B.力矩的大小也称为扭力

C.力矩的方向由左手螺旋法则确定

D.手指弯向力所指的转动方向时,拇指指向力矩的方向

E.任何力对于不在力作用线上的任意点都会产生力矩

考点:康复医学主治医师康复医学主治医师基础知识康复医学主治医师基础知识题库
题型:单项选择题 A1/A2型题

阅读小天地:读一读,选一选。

      Mary is my good friend. She lives in New York now. She's 14 years old. She can speak English and

Chinese. There are five people in her family. Her father works in a hospital. He's a good doctor. He goes to

work by car every day. Her mother teaches English in a primary school (小学). She goes to work by bike.

Her brother Jack is only four years old. His sister is older than Mary. She is a driver. They like to watch a

movie on Sundays. They go to the park to have a walk in the evening.

1. How many people are there in Mary's family? 

A. Three.

B. Four.

C. Five.

2. How does Mary's father go to work?

A. By train.

B. By car.

C. By bike.

3. They live in ____________.

A. the U. S.

B. the U. K.

C. China

4. They often ____________ in the evening.

A. go to watch a movie

B. go to the park for a walk

C. watch TV

5. Mary's sister is a ____________.

A. student

B. teacher

C. driver

题型:单项选择题 A1/A2型题

求真务实不能也不可能一蹴而就,一劳永逸。彼时的“真”不能代替此时的“真”,彼事的“实”不能代替此事的“实”。其中的哲理是

A.事物的运动是绝对的、无条件的和永恒的

B.事物运动的方式是永恒不变的

C.真与假或虚与实是交织在一起的

D.事物的运动变化是不可捉摸的

题型:单项选择题 A1/A2型题

英国的 * * 运动失败了,但也迫使政府实行了一些让步政策,主要是因为(  )

A.英国政府妥协

B. * * 派领导人坚决要求

C.在 * * 运动中,工人阶级惊天动地的力量

D.法国二月革命的影响

题型:单项选择题 A1/A2型题

(3分)物理学是一门以实验为基础的学科,实验中仪器的读数是必不可少的,请你读出图中各种测量仪器的读数,并分别填在a、b、c处。

            

a.          ℃                  b.          ㎝           c.          kW·h

题型:单项选择题 A1/A2型题

洞口开挖及支护前,应先清理()及()可能滑坍的表土、灌木及山坡危石等,疏通流水沟渠,排除积水。

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