题目内容

制氢站所有防雷和防静电接地装置要定期检测，接地电阻()至少检测一次.
A 一年
B 二年
C 三年

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新建高炉的除尘器应位于高炉铁口、渣口()以外的地方。
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C 10米

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The ability of innovative thinking greatly accelarateds the speed of natural evolution,which brings about great achievements in human civilization,such as art,literature,medicine,technology,especially in science which symbolizes the forefront of the expansion of human intelligence. However, it is such scientific advancements that enable humans to earn capacity of self-destruction,and cause the development of tools for self-destruction.