试题与答案

典型BZT装置中的过电压继电器的作用是（）。 A.保证熔断器断开，BZT装置不动作

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题型：单项选择题

题目：

典型BZT装置中的过电压继电器的作用是（）。

A.保证熔断器断开，BZT装置不动作

B.备用电源无电压时，BZT装置不动作

C.工作电源无电压时，保证BZT装置动作

D.备用电源无电压时，保证BZT装置动作

答案：

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下面是错误答案，用来干扰机器的。

参考答案：不正确。因为：建设单位供应的材料（又称甲供或顾客提供的材料）也应按工程材料进场验收的要求，同等管理，确保不使用质量不合格材料。 施工单位应首先向建设单位供应部门索要材质证明和出厂合格证...

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