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问题 名词解释

竣工决算

答案

参考答案：

它是反映竣工项目建设成果的文件，是考核其投资效果的依据，是办理交付、动用、验收的依据，是竣工验收报告的重要部分。

填空题
从方框中选择适当的单词或短语，并用其正确形式完成句子
spend, talk about, between, on vacation, nothing, reason
have fun, hospital, take a walk, make, wait for, lazy, in fact
 
1. There is _____ wrong with this computer.
2. The shop is _____ the hotel and the bank.
3. -How much do you _____ on this beautiful coat?
    -80 yuan.
4. Tom is a _____ boy. He doesn't do any housework.
5. I want to _____ after supper. to keep healthy.
6. -Can you tell me the _____ why you didn't come that night?
    -Because I was ill that night.
7. _____, I would like to walk.
8. You'll find that we all want to _____ friends with you.
9. -What are you doing now?
    -I am _____ Jack. We'll go to school together.
10. The students went to the park and _____ there.
11. -Where is Susan?
     -She is _____ in Shanghai.
12. We will _____ the problem after class.
13. Lily is ill, so she is in _____ now.
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实验题

如图所示为一次记录小车运动情况的纸带,图中A、B、C、D、E、F、G为相邻的记数点，相邻记数点的时间间隔T =0.1s.

（1）计算运动物体在E、F点的瞬时速度（保留三位有效数字）.

各个点BCDEF
v/ m•s-10.1650.2140.263     
 (2)在坐标系中作出小车的v-t图线.

（3）由图线得到小车的加速度为     m/s2（保留两位有效数字）
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