汽轮发电机密封瓦在大修拆卸前，应该用氢气进行打压试验，以便检修时处理泄漏部分。

根据句意和词首字母或汉语提示完成单词。

1. You shouldn't play your CDs too l___________.

2. He wants to get a p___________ job during the sun vacation.

3. The shirt is i___________ style, so I want to buy it.

4. I f___________ my English test and I was very upset

5. Everyone is here today e___________ Tom.

6. Could you please give me some___________(建议)for my study?

7. My best friend is more ___________(受欢迎的)than I.

8.These clothes are the same as my___________(朋友们的)clothes.

9. The children can look after___________(他们自己).

10.The parents are always ___________(抱怨)their children's rudeness.

《建筑消防安全检测评价技术规程》规定，火灾自动报警系统布线时，探测器的“+”线应为（）色，“-”线应为（）色

A.红，绿

B.红，蓝

C.红，黄

D.红，黑

从云下飞过，应尽量避开下降气流最强区域（下击暴流区域）。一般说来，下降气流最强区域与降水（）区域是一致的

A.最弱区

B.为零的

C.最强的

D.较强的

交通标志的设置方式有（）。

A、柱式

B、悬臂式

C、门式

D、附着式

渗氮