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【单选题】

氧电极电缆短路的主要原因是()

A.
主机上氧电极线缆接线处短路
B.
氧电极线缆接线柱受潮、进水短路
C.
以上都对
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参考答案:
参考解析:
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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.

【单选题】两相短路接地的复合序网是()

A.
三序网串联
B.
三序网并联
C.
两序网并联

【单选题】氧电极长期不使用应该()

A.
倒掉电解液
B.
用清水洗净
C.
晾干,干放保存
D.
以上都要做

【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