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问题 单项选择题

有一测温的热电阻，其分度号已经模糊不清，试采用下面合适的手段，进行判别（）。

A、加电压进行热量测试

B、用万用表电阻档测试

C、用万用表电压档测试

D、用万用表电流档测试

答案

参考答案：B

填空题


In the following passage, there are 20 blanks representing the words that are missing from the context. You are to put back in each of the blanks the missing worD．The time for this section is 20 minutes.
Many things about language are a mystery, and many will always remain so. But some things we do know.
First, we know that all human beings have a language of some sort. (1) is no race of men anywhere on earth so backward that it has (2) language, no set of speech sounds by which the people communicate with one (3) . Furthermore, in historical times, there has never been a race of men (4) a language.
Second, there is no such thing as a primitive language. There are many people (5) cultures are underdeveloped, who are, as we say, uncivilized, but the (6) they speak are not primitive. In all known languages we can see complexities (7) must have been tens of thousands of years in development.
This has not (8) been well understood; indeed, the direct contrary has often been stateD．Popular ideas (9) the language of the American Indians will illustrate. Many people have supposed that the Indians (10) in a very primitive system of noises. Study has proved this (11) be nonsense. There are, or were, hundreds of American Indian languages, and all of them (12) out to be very complicated and very old．They are certainly (13) from the languages that most of us are familiar with, but they are (14) more primitive that English and Greek.
A third thing we know about language (15) that all languages are perfectly adequate. That is, each one is a perfect (16) of expressing the culture of the people who speak the language.
Finally, we (17) that language changes. It is natural and normal for language to change; the (18) languages which do not change are the dead ones. This is easy to (19) if we look backward in time. Change goes in all aspects of language. (20) features change as do speech sounds, and changes in vocabulary are sometimes very extensive and may occur very rapidly. Vocabulary is the least stable part of any language.

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多项选择题

根据DL5009.1—2014《电力建设安全工作规程第1部分：火力发电》第6.3.2条规定，在已带电的盘、柜上作业时（）

A.应办理工作票，带电部分与非带电部分用绝缘物可靠隔离

B.了解盘内带电系统的情况。穿戴好工作服、工作帽、绝缘鞋和绝缘手套并站在绝缘垫上

C.工具手柄应有绝缘并采取防坠落措施

D.设监护人
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