氟利昂

题型:名词解释

问题:

氟利昂

考点:制氧工考试制氧初级工制氧初级工题库
题型:名词解释

“p且q是真命题”是“p或q是真命题”的(  )条件.

A.充分不必要

B.必要不充分

C.充要

D.既不充分又不必要

题型:名词解释

单词拼写 (共10小题,共10分)

小题1:It is c______________ of you not to make any noise while the others are having a rest.

小题2:Each classroom in our school is e_________ with a computer, which is helpful to our study.

小题3:She started in the film d__________ by Zhang Yimou.

小题4:Children are always c_________ to know the things they have never seen.

小题5:You are likely to get lost while travelling in the j_____.

小题6:It is hard to know the ____(起源) of the human race, that is, how humans came into being.

小题7:You have to eat food with plenty of fiber that helps you _____ (消化) better.

小题8:Your brother is full of ________(幽默); he had us laughing all through the meal.

小题9:Stop pretending that the problem doesn’t ________(存在).

小题10:We reached a village which is ___________(包围) by hills.

题型:名词解释

夫妻不和的男外科大夫事故发生率较高,如果用病例对照研究来验证此假设,合适的对照为

A.未出事故的男外科大夫

B.不是外科大夫的男性

C.夫妻和睦的男外科大夫

D.夫妻和睦的不是外科大夫的男性

E.未出事故的外科大夫之妻

题型:名词解释

氯丙嗪引起的 * * 肿胀、溢乳是由于

A.阻断M-胆碱受体
B.阻断黑质纹状体多巴胺受体
C.阻断中脑边缘叶和中脑皮质通路中多巴胺受体
D.阻断α-肾上腺素受体
E.阻断结节漏斗通路中多巴胺受体

题型:名词解释

工作压力系指在正常操作情况下,容器顶部可能出现的最高压力。

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