问题 选择题

下面是使用温度计测量液体温度的步骤,按正确的顺序排列应为(  )

①让温度计液泡浸没在被测液体中;

②观察温度计的测量范围及最小刻度,选择适当的温度计;

③取出温度计;

④估计被测液体的温度;

⑤读出温度计的示数并记录;

⑥让温度计与被测液体充分接触一段时间.

A.③④⑥①②⑤

B.⑤③⑥④②①

C.④②①⑥⑤③

D.④②①⑥③⑤

答案

用温度计测量液体的温度时,应该先估计被测液体的温度④,再观察温度计的测量范围及最小刻度,选择适当的温度计②,再让温度计液泡浸没在被测液体中①,再让温度计与被测液体充分接触一段时间⑥,再读出温度计的示数并记录⑤,最后取出温度计③.(温度计需要有合适的量程和精确度,在读数过程不能取出进行读数,因为一旦离开待测液水银柱就会下降,所以温度计不需要将水银柱甩回去,这一点不同于体温计)

故选C.

单项选择题

Anthropology is the study of human beings as creatures of society. It (1) its attention upon those. physical characteristics and industrial techniques, those conventions and values, which (2) one community from all others that belong to a different tradition.

The distinguishing mark of anthropology among the social sciences is that it includes for serious study other societies (3) our own. For its purposes any social (4) of mating and reproduction is as significant as our own. To the anthropologist our customs and those of a New Guinea tribe are two possible social schemes for (5) a common problem, and in so far as he remains an anthropologist he is (6) to avoid any weighting of one (7) the other. He is interested in human behavior, not as it is shaped by one tradition, our own, but as it has been shaped by any tradition (8) He is interested in a wide (9) of custom that is found in various cultures, and his object is to understand the way in which these cultures change and (10) , the different forms through which they express themselves and the (11) in which the customs of any peoples function in the lives of the (12) .

Now custom has not been commonly regarded as a (13) of any great moment. The inner workings of our own brains we feel to be uniquely (14) of investigation, but custom, we have a way of thinking, is behavior at its most commonplace. (15) , it is the other way round. Traditional custom is a mass of detailed behavior more astonishing than (16) any one person can ever evolve in individual actions. Yet that is a rather (17) aspect of the matter. The fact (18) first rate importance is the predominant role that custom (19) in experience and belief, and the very great varieties it may (20)

9()

A.option

B.span

C.prototype

D.range

单项选择题