问题 单项选择题

允许吸上真空高度是指在不发生气蚀时,泵入口处压强可允许达到的()。

A.最大真空度

B.最小真空度

C.最大压强

答案

参考答案:A

完形填空

先通读下面的短文,然后根据短文内容和所给首字母,在空格内填入一个适当的词,使短文意思完整。所填单词必须在答题卷标有题号的横线上完整写出。(本大题共5分, 每格0.5分)

Years ago in Scotland, the Clark family had a dream. The couple worked and saved, making p 小题1:  for their nine children and themselves to travel to the USA. It had taken years before they saved enough money and got everything r  小题2:   for the trip.

The whole family was excited about their new life. However, seven days b 小题3:      they left for the USA, the youngest son was bitten(咬)by a dog. The doctor t  小题4:  the boy,

but because there was a possibility of rabies(狂犬病), they would be kept away from others for fourteen days.

The family’s dream could not come t  小题5:  . They would not be able to make the trip to America as they had planned. Watching the ship leave---without the Clark family, the father was quite a  小题6:  with both his son and God for their bad luck.

Five days later, a piece of sad news spread t  小题7:  Scotland---the strong and powerful ship, Titanic, had gone down, taking h  小题8:  of lives with it. The Clark family was to have been on that ship, but because the son was bitten by a dog, they were left b 小题9:   in Scotland.

When Mr. Clark heard the news, he thanked his son for saving the family. He thanked the God for t  小题10:  a sad thing into a good one.

Although we may not always understand, all things happen for a reason.

单项选择题