氟利昂

“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

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.

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

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

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。