题目内容

正火冷却速度比退火(),因此硬度比退火稍()

A. 快
B. 慢
C. 低
D. 高

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对于有网状二次渗碳体的过共析钢,可以不做处理就直接进行球化退火。

A. 对
B. 错

Fill in the gaps with words or phrases given in thebox. Changethe form where necessary1)Prof.Willianms says that my composition is good except for the ending which seems too ___.2)Suffering from insomnia for several days, Ann went to see her doctor and was told that the problem was more than physical.3)The organizer of the charity concert said,” Iask all of you to join me in praying that God will _ those who have given so generously for the poor and needy.4)The insurance policy doesnot cover damage to the goods caused by normal __________.5)The old economic beliefs are widely regarded as too_ to be useful in solving the problems now emerging in our economy.6)You arefree to say what you think, but as a responsible individual you shouldalso be prepared to face the of what you say.7)Prices are going down. However this _welcome change may bring about other problems in the economy.8)John’s view on the train crash stands _________those of almost all of his colleagues.9)_ is the most powerful driving force in one’s pursuit of knowledge.10)After teaching grade school for a year or so, she felt a love for the pupils.11)Donations from alumni are an important source of the university’s income. But research funds come ____from the government.12)Should judges consider popular before deciding cases?

阴的特性是什么？阳的特性是什么？

阴阳之间有哪些相互关系？