下列不是破拆器材大体的种类的是()。A、自动破拆工具 B、动力破_爱下问搜题

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问题单项选择题

下列不是破拆器材大体的种类的是()。

A、自动破拆工具

B、动力破拆工具

C、化学破拆工具

D、手工破拆工具

答案

参考答案：A

填空题

用方框中所给词的适当形式填空。

Learn…by heart at the same time think about both…and… neither… nor…
a form of (一种形式) either…or… except for what if a part of (一部分)

1. Taiwan is ____________ China.
2. ______ Tom ______ Jean are from England. They like Chinese food.
3. If you read the poem again and again you will _______ it _______.
4. ___________ it carefully, and you will work out the maths problem.
5. I like the autumn best. It's ______ too cold _______ too hot.
6. Don't all speak ____________, Please speak it one by one.
7. Your Chinese homework is good____________ your handwriting.
8. ____________ an accident really happens?
9. We have only one ticket. _______ you _______ I can go to the cinema.
10. The novel is ____________ literature. (文化)

计算题

一位工人在水平道路上推一辆运料车，车的质量为50kg，所用的水平推力为250N，产生的加速度为2m/s²，设运料车受到的阻力不变。求：

（1）运料车受到的阻力大小；

（2）工人撤去水平推力时，车的加速度。