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【单选题】

负序电流保护是否能反映三相短路()。

A.
B.
不能。
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参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the four choices marked A),...

A.
He collected it from the newspaper he subscribed to.
B.
He found it when thumbing through a magazine.
C.
He chanced upon it on a fridge when visiting a friend.
D.
He worked for the financial newspaper IBD.

【多选题】()属于非对称短路。

A.
单相短路
B.
两相短路
C.
两相接地短路
D.
三相短路