电磁式电压互感器油位不正常应开展（），停电检查、调整油位，根据需要进行密封处理或更换

所谓“水流星”表演时，就是用绳系着装有水的小桶，在竖直平面内做圆周运动，而水不洒落。如果在表演“水流星”节目时，栓杯子的绳长为，其最大承受力是杯子和杯内水的重量的8倍，要使绳子不断裂，节目表演成功，杯子通过最高点时速度的取值范围为多少？

A

“Depend on yourself” is what nature says to every man. Parents can help you. Teachers can help you. But all these only help you to help yourself.

There have been many great men in history. But many of them were very poor in boyhood, and had no uncles, aunts, or friends to help them. Schools were few and low. They could not depend on them for an education. They saw how it was, and set to work with all their strength to know something. They worked their own way up to fame.

One of the most famous teachers in England used to tell his pupils, “I cannot make worthy men of you, but I can help you make men of yourselves.”

Some young men have no ambitions(抱负) to do anything; and they are to be pitied. They can never succeed unless they see their foolishness, and change their courses. They are nothing now, and will be nothing as long as they live, unless they accept the advice of parents and teachers, and depend upon their own honest and serious efforts.

小题1:The best title for this passage is ________.

A．Depend on Yourself

B．Don’t Depend on Your Parents

C．Nobody can help you

D．The Good Advice小题2: From the passage we know that many great men in history ________.

A．learned everything themselves in boyhood

B．didn’t receive any education

C．had no relatives or friends

D．depended on themselves to become famous小题3:Which of the following is TRUE?

A．Parents can make you succeed.

B．Great men in history were very poor.

C．Teachers would not like to help you to be a man.

D．Only you can make yourself a great man.小题4:Why have some young men failed in everything?

A．They have no ambitions.

B．They are to be pitied.

C．They have changed their courses.

D．They have seen their foolishness.

连续X线在物质中的衰减特点是（）

A.平均能量提高、能谱变宽、线质提高

B.平均能量降低、能谱变宽、线质降低

C.平均能量提高、能谱变窄、线质提高

D.平均能量提高、能谱变宽、线质降低

E.平均能量降低、能谱变窄、线质提高

干砌石护坡（坝）有局部石块松动或损坏时，其养护整修方法不包括（）。

A.垫平

B.大范围拆除重砌

C.塞紧

D.更换