从装配图的明细表中可了解（）。 A.机器或部件的工作原理 B.零件的详细结构和作用

改写句子。

1. They did not go to the Summer Palace because they had a lot of work to do.

2. When he heard a cry for help, he rushed out.

3. Because he recognized the man who had been his classmate ten years before, he was happy.

4. When the students went home from school, they talked and laughed.

5. As he was very old, he had to give up his teaching.

6. As he was an engineer, he knew exactly what to do.

7. The children went out to play after they had finished their homework.

8. As she had been given such a good chance, how could she let it slip away?

9. When he passed by the house, he saw a girl playing the piano.

10. As he had not found the wallet, he had to borrow some money from her.

发电机功率因数低于额定功率因数时，最容易超过容许值的是（）电流。

高层建筑内的商业营业厅、展览厅等，当设有火灾自动报警系统和自动灭火系统，且采用不燃烧或难燃烧材料装修时，地上部分防火分区的允许最大建筑面积为5000m2；地下部分防火分区的允许最大建筑面积为2000m²。

男性，40岁，消瘦、乏力、怕热、手颤3个月。夜间突然出现双下肢软瘫。体检：神志清，血压140/80mmHg，心率110次/分，律齐，甲状腺轻度增大、无血管杂音。

为明确诊断，应首先进行的检查项目是（）

A.血电解质测定及甲状腺功能测定

B.血气分析及血电解质测定

C.胸部CT及血抗乙酰胆碱受体抗体测定

D.肌电图及血电解质测定

E.头颅CT、血糖测定

在宇宙飞船内，宇航员所呼出的气体要通过盛有氢氧化锂的过滤网，以除去其中所含的二氧化碳，发生反应的化学方程式为

2LiOH（固）+CO₂（气）═Li₂CO₃（固）+H₂O（液）．试计算1g氢氧化锂所能吸收二氧化碳的质量．