试题与答案

我国电力系统中性点接地方式有三种,分别是()A、直接接地方式、经消弧线圈接地方式和经

题型:单项选择题

题目:

我国电力系统中性点接地方式有三种,分别是()

A、直接接地方式、经消弧线圈接地方式和经大电抗器接地方式

B、不接地方式、经消弧线圈接地方式和经大电抗器接地方式

C、直接接地方式、不接地方式、经消弧线圈接地方式

D、以上都不对

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B, E解析:硅酸盐水泥适用于早期强度要求高的工程及冬期施工的工程;严寒地区遭受反复冻融循环作用的混凝土工程。矿渣硅酸盐水泥适用于大体积混凝土工程。火山灰质硅酸盐水泥适用于有抗渗要求的工程。...

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