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【多选题】
常用的灭弧装置有A.
双断口电动力灭弧
B.
磁吹灭弧装置
C.
栅片灭弧装置
D.
灭弧罩灭弧装置
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】She thought of her warm days with Tom and couldn't help crying.
A.
Thinking of her warm days with Tom, she couldn’t help crying.
B.
Thought of her warm days with Tom, she couldn’t help crying.
C.
To think of her warm days with Tom, she couldn’t help crying.
D.
Think of her warm days with Tom, she couldn’t help crying.
【简答题】怎样理解大力推进生态文明建设的重要意义?
【简答题】怎样理解大力推进生态文明建设的重要意义?
【简答题】Granny looked for her book，but she couldn’t find it_____.
【单选题】hard she tried, she couldn't control her feelings when she was told her baby had been found．
A.
As
B.
While
C.
However
D.
Although
【单选题】—Why isn’t Susan at the dance? —She couldn’t come because she hurt her foot. — !
A.
Don’t worry about her y
B.
Never mind
C.
That’s a shame
D.
Bad luck
【简答题】9月10日教师节即将到来,请制作一张感恩教师的公众号封面图。
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