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【单选题】
Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. As civilization proceeds in the direction of technology, it passes the point of supplying all the basic essentials of life-food, shelter, clothes, and warmth. Then we are faced with a choice between using technology to provide and fulfill needs which have been regarded as unnecessary or, on the other hand, using technology to reduce the number of hours of work which man must do in order to earn a given standard of living. In other words we either raise our standard of living above that necessary for comfort and happiness or we leave it at this level and work shorter hours. I shall take it for granted that mankind has, by that time, chosen the latter alternative. Men will be working shorter and shorter hours in their paid employment. It follows that the housewife will also expect to be able to have more leisure in her life without lowering her standard of living. It also follows that human domestic servants will have completely ceased to exist. Yet the great majority of the housewives will wish to be relived completely from the routine operations of the home such as vacuuming the floors, or washing the clothes, or making beds. By far the most logical step to relieve the housewife of routine, is to provide a robot slave which can be trained to the requirements of a particular home and can be programmed to carry out half a dozen or more standard operations, when so switched by the housewife. In this passage, the author states that______.
A.
technology is no linger regarded as important as it used to be
B.
it is always reasonable to make a man work fulltime for a good salary
C.
modem civilization provides people with more than daily necessities
D.
it is salary, not the number of working hours that worries people most
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【多选题】关于裂区试验设计,下列说法正确的是:
A.
两因素裂区设计主区因素主效应的精确性高、副区因素主效应以及副区因素与主区因素的交互作用的精确性低
B.
两因素裂区设计副区因素是主要研究的因素,主区因素是次要研究的因素,故副区面积小,主区面积大
C.
两因素裂区设计是先将各区组划分为主区,再将主区划分为副区;把主区因素的各水平(即主处理)独立随机排列在各区组内的主区上,把副区因素的各水平(即副处理)独立随机排列在各主区内的副区上
D.
主处理的重复数等于试验的重复数,副处理的重复数等于试验的重复数×主处理数,显然副处理的重复数大于主处理的重复数
【单选题】有限空间作业的氧气浓度合格为()(V/V)。( )
A.
氧气浓度为19.5-23.5%
B.
氧气浓度为19-22.5%
C.
氧气浓度为18-21.5%
D.
氧气浓度为18-23.5%
【单选题】恒速恒量给药后形成的血药浓度为
A.
有效血浓度
B.
稳态血浓度
C.
峰浓度
D.
阈浓度
E.
中毒浓度
【单选题】完全竞争市场中的厂商总收益曲线的斜率为
A.
固定不变
B.
经常变动
C.
1.0
D.
0.0
【简答题】某新华书店批发一批图书,每册标价20元,共计1000册。由于购买方购买量大,故按七折优惠价格成交,并将折扣部分与销售额同开在一张发票上。10日内付款2%折扣,购买方如期付款。此项交易应缴纳的增值税销项税额是多少?
【单选题】乙醇拭浴的要求是
A.
浓度为25%~35%,温度为25~30℃
B.
浓度为50%,温度为27~37℃
C.
浓度为25%~35%,温度为27~37℃
D.
浓度为50%,温度为25~30℃
E.
浓度为70%,温度为27~37℃
【单选题】恒量、恒速给药最后形成的血药浓度为
A.
有效血浓度
B.
稳态血药浓度
C.
峰浓度
D.
阈浓度
E.
中毒浓度
【判断题】圣维南原理可以应用于大边界和小边界
A.
正确
B.
错误
【判断题】圣维南原理可应用于大边界和小边界。 (2.0分)
A.
正确
B.
错误
【单选题】完全竞争市场中的厂商总收益曲线的斜率是?
A.
固定不变的
B.
经常变动的
C.
1
D.
0
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