试题与答案

励磁调节器中的调差单元的输入量是()。 A.有功功率和无功功率 B.定子电压和定子电

题型:单项选择题

题目:

励磁调节器中的调差单元的输入量是()。

A.有功功率和无功功率

B.定子电压和定子电流

C.定子电压

D.定子电流

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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题型:阅读理解

At the end of eight grade, our class went to Washington, D.C. For a group of 14-year-olds, this was a big deal!

The first day was so tiring; we could hardly remember where we were and what we were seeing. The next morning, we were off to see monuments (纪念碑),starting with Washington, Lincoln and Jefferson. We walked along the paths through trees. Then the Wall came into view—the Vietnam Veterans Memorial.

As I moved slowly closer to the Wall, I heard a bagpipe(风笛)in the distance, which seemed to show respect to the lives lost in the jungles of Vietnam .

We continued walking and felt surprised at the number of names carved in the black stone. I was determined to find a soldier with my last name, but my hunt was stopped when a man caught my eyes. He was kneeling(跪着) at the Wall, a single rose at his feet. His head was bowed and he was rubbing his fingers over one name. I thought how sad he was, and then moved on .

After a few minutes I found one with my last name, but my eyes returned to the kneeling man. He was still rubbing his fingers over the same name. He never knew I was watching him, lost in deep sorrow. It was time for me to leave the kneeling man and the Wall. On the way home, I couldn’t help thinking of the kneeling man and his sad face. I wasn’t sure of the effects of war before, but at that moment I realized how much that man suffered from losing his loved one. Maybe he was the only one of so many families who experienced the same .

I never knew the full effects of war until I saw that man. I only know about war from history classes. The kneeling man taught me more about war and the effects it has on people than any history book .

小题1:Which of the following makes the author feel the suffering that war brings to human beings?

A.The kneeling man.

B.The sound of a bagpipe.

C.The number of names carved in the stone.

D.The jungles of Vietnam.小题2:The man continued to rub his fingers over the name probably because_____.

A.he found it covered with dust

B.he missed the loved one who died in a war

C.he intended to remove it completely

D.he recalled the fierce war he fought in小题3:What did the author learn from the trip?

A.How fierce war is in history.

B.How people remember those who died in wars.

C.What bad effects war had on many families.

D.What we should do to prevent war.小题4:According to the last paragraph, the author probably thinks that _____.

A.he should have studied history hard in class

B.history books don’t tell readers the truth

C.there is more in history than books tell us

D.the kneeling man should be a history teacher

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