试题与答案

以下关于DDPU单板指示灯的说法,错误的是()。A、RUN亮,说明有电源输入,单板存

题型:单项选择题

题目:

以下关于DDPU单板指示灯的说法,错误的是()。

A、RUN亮,说明有电源输入,单板存在问题

B、VSWRA慢闪(0.5Hz),说明A通道有驻波告警

C、ALM灭,告警状态(含驻波告警),表明存在故障

D、VSWRA亮,说明A通道有驻波严重告警

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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EAT YOUR VEGETABLES.Wash your hands. Always say  “please” and “thank you”. We are full of advice for our children, but when it comes to money, we often have little to say. As a result, our children may grow up with clean hands and good manners, but without any idea how tomanage their money.

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