电压互感器低压侧一相电压为零，两相不变，线电压两个降低，一个不变，说明（）。A.低压

某抗酸药的成分如图所示。

（1）写出碳酸氢钠的化学式__________，碳酸氢钠属于________（“酸”、“碱”或“盐”）。

（2）每片抗酸药中,含弗朗鼠李皮粉_______mg 。药片中碱式硝酸铋与碳酸镁的质量比是___________。

For centuries, the body's blood has been linked closely with the emotions. People who show no human emotions or feelings, are said to be cold-blooded. For example, the police are searching for a cold-blooded killer. He seems to kill for no reason, and no emotion, as if taking someone's life as nothing．

Cold can affect other parts of the body. The expression “get cold feet” has nothing to do with cold or your feet．The expression means being afraid to do something you have decided to do．For example, you agree to be president of an organization．But then you learn that all the other officers have resigned（辞职）, and all the work of the organization will be your responsibility. You are likely to get cold feet about being president when you understand the situation．

The expression “give someone the cold shoulder” probably comes from the physical act of turning your back toward someone, instead of speaking to him face to face. You may give a cold shoulder to a friend who has not kept a promise he made to you. Or, to someone who has lied about you to others．

A cold fish is not a fish．It is a person．But it is a person who is unfriendly, and shows no love or warmth. A cold fish does not offer much of himself to anyone. Someone who is a cold fish could be cold-hearted. Now a cold-hearted person is someone who has no sympathy. Several popular songs in recent years were about cold-hearted men or cold-hearted women who, without feelings, broke the hearts of their lovers．

“Out in the cold” means not getting something that everybody else got. A person might say that everybody but him got a pay raise. He was left out in the cold. And it is not a pleasant place to be．

小题1:When you refuse to speak to a man and treat him in a distant way, you may express by “_____”．

A．I give him the cold shoulder

B．I think he is a cold-blooded man

C．I think he is a cold fish

D．I'm likely to get cold feet小题2:If Sue shows absolutely no reaction to those awful pictures of starving children in Africa, you will say ______．

A．she is a cold-blooded killer

B．she gets cold feet

C．she is a cold fish

D．she is out in the cold小题3:We can use the expression “_____" to describe a man who hurts his lover without mercy．

A．cold-blooded

B．cold-hearted

C．cold feet

D．cold shoulder小题4:The topic of this passage is about _____．

A．the relationship between cold and our body

B．some expressions about friendship

C．some expressions connected with cold

D．how cold weather comes into being

灌砂法测定土的密度之前，要求标定的内容有______。

A．一项
B．两项
C．三项
D．四项

单一序列和高度重复序列

大模板是用于现浇钢筋混凝土（）施工的工具式模板。

A.框架

B.筒体

C.剪力墙

D.楼盖