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问题 单项选择题

压力释放装置在射孔枪起爆的瞬间同时启动，将射孔弹爆炸产生的极高压力释放到泄压筒内，从而起到保护上下封隔器和（）的作用。

A、测试工具

B、地层

C、射孔器

D、压差延时装置

答案

参考答案：A

完形填空

阅读短文，根据短文内容和已给出的首字母，在空白处填入适当的单词。将完整的单词写在短文后面的横线上。

November 19th, 2013                                                   Sunny 

Today is my first day in Singapore. It’s quite fascinating. I fell in love with this beautiful c小题1:  as soon as I got off the plane. The city was so tidy that I couldn’t find any r 小题2:.

My host family were waiting for me outside. I wanted to s 小题3: hands with them because they are Chinese, but they k 小题4:me to welcome me. All of us wanted to be as polite as possible. On the way to their home, my host p  小题5:  to a beautiful statue--- Merlion Statue and told me it was the s 小题6: of Singapore. My host had prepared a big dinner for me. When I saw forks and k 小题7: on the table, I told them I had learned how to use chopsticks before I left France for Singapore. I had the most delicious Chinese food. After dinner, we took a walk in the park n小题8:  the house. Though we are from d 小题9: countries, we talked happily. My host family went out of their way to make me r 小题10:  and feel at home.
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多项选择题

病人突发严重呼吸困难，应考虑下列哪些疾病而予以紧急检查并抢救( )。

A．急性支气管炎

B．异物吸入

C．肺大血管栓塞

D．张力性气胸

E．急性肺炎
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