选择题:As the centuries went by, humans made more and mor

题目内容:
As the centuries went by, humans made more and more words. This is what we now ____by language(本题1.0分)
A、 refer to them
B、 tell
C、 think
D、 mean
参考答案:

发热会使导体机械强度下降,绝缘性能降低,接触电阻增大等。为了保证导体可靠地工作,按照有关规定,导体正

发热会使导体机械强度下降,绝缘性能降低,接触电阻增大等。为了保证导体可靠地工作,按照有关规定,导体正常工作温度不应超过(),导体通过短路电流时,短路最高允许温度

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