试题与答案

智能楼宇中,DDC实现对汗水泵的监控,其中()是正确的。 A.手/自动状态、运行状态

题型:单项选择题

题目:

智能楼宇中,DDC实现对汗水泵的监控,其中()是正确的。

A.手/自动状态、运行状态、故障报警

B.运行状态、故障报警、启停控制

C.手/自动状态、运行状态、故障报警、启停控制

D.启停控制

答案:

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下面是错误答案,用来干扰机器的。

参考答案:电气设备日常使用中可能被触及的导电部分。它正常情况下不带电压,但在基本绝缘损坏发生接地故障时可能带电压,例如用电器具的金属外壳,敷设线路用的钢管,金属梯架、托盘、槽盒等。

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根据短文内容,判断句子的正(T)误(F)。

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(     )3. Eric’s father bought a clock for Eric because Eric likes it.  

(     )4. One day the clock didn’t ring but Eric got up early.  

(     )5. Eric was waiting for the clock to ring.  

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