问题 单项选择题

两台输油泵并联运行时,已出现一台泵抢量,另一台泵流量偏小导致泵体发热的情况,此时应优先选择()。

A、停发热泵

B、调节出站调节阀

C、减小抢量泵出口开度

D、停抢两泵

答案

参考答案:C

阅读理解

In the summer of 1980 a Spanish tourist, Gaspar Carner, went to Great Britain on holiday. When he was travelling in Scotland, he decided to visit Loch Ness, the famous lake where people say there is a monster. But while he was going across the lake in a boat, his bag fell into the water. In the bag were his passport, car keys, pen, and all his money. Loch Ness is 150 meters deep, so he didn’t expect to see the bag again!

Fourteen years later, in 1994, some scientists decided to explore the lake. They looked for the Loch Ness monster. Suddenly one of them saw something black in the water. They carefully went nearer. They thought the black thing was the monster. They went nearer and nearer. It was a bag. They took the bag out of the lake. They found that the photo on the passport was still clear. One of the scientists knew Gaspar Carner. So the bag was returned to him.

小题1:Carner visited Loch Ness _____.

A.on business

B.on holiday

C.for exploring

D.for money小题2:Why is the lake famous? Because _____

A.it’s very deep.

B.there’s a bag in it.

C.there may be a monster

D.it’s in Scotland小题3:What’s in Carner’s bag? _____.

A.A monster

B.Something black

C.Photo

D.Many useful things小题4:How did the explorers know the bag was Carner’s? _____.

A.One of the explorers knew Carner

B.Carner recognized (认出) the bag

C.Carner was very famous

D.They expected it was the monster小题5:Why didn’t Carner expect to see the bag again?

A.There was nothing important in his bag.

B.He didn’t like his bag.

C.The monster ate his bag.

D.He thought Loch Ness was so deep that his bag couldn’t be found.

单项选择题