三相组式变压器的各相磁路是彼此独立的，当一次绕组外加三相电压_爱下问搜题

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问题判断题

三相组式变压器的各相磁路是彼此独立的，当一次绕组外加三相电压对称时，各相空载电流也对称。

答案

参考答案：对

单项选择题

联合试运转费是指（）。

A．单机无负荷试运转的调试费

B．系统联动无负荷试运转的调试费

C．整个车间联合试运转发生的费用

D．整个车间联合试运转发生的费用支出大于试运转收入的亏损部分

单项选择题

A Trip to the Forest

One day Bob took two of his friends into the mountains. They put up their tents and then rode off to a forest to see how the trees were growing.
In the afternoon when they were about ten kilometres from their camp, it started to snow. More and more snow fell. Soon Bob could hardly see his hands before his face. He could not find the road. Bob knew there were two roads. One road went to the camp, and the other went to his house. But all was white snow. Everything was the same. How could he take his friends back to the camp
Bob had an idea. The horses ! Let the horses take them back ! But what would happen if the horses took the road to his house That would be a trip of thirty-five kilometres in such cold weather!
It was getting late. They rode on and on. At last the horses stopped. Where were they None of them could tell. John looked around. What was that under the tree It was one of their tents!

It is clear that they wanted the horses to take them to ______.

A．John’s house

B．the camp

C．the forest

D．the mountains