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【简答题】
使电弧熄灭的条件是什么?熄灭电弧的去游离方式有哪些?开关电器中有哪些常用的灭弧方法?
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】听力原文：W: Did you pack the car? M: Yes, I put in our bathing suits, some towels, the suntan lotion, and our two library books. Q: Where are they going? (14)
A.
To the library.
B.
Picnicking in the woods.
C.
Skiing in the mountain.
D.
To the beach.
【简答题】传热有三种方式，分别是热传导、（）和热辐射，括号中的传热方式是食品工业中重要的传热方式，也是食品工程原理主要讨论的内容。
【简答题】For what purpose do we have to pack our goods?
【单选题】Our silk pajamas are attractive in design and superior in quality ____any other brands.
A.
to
B.
than
C.
with
D.
of
【单选题】Our ladies’ pajamas are packed in cartons, each _____ 12 doz./sets.
A.
to contain
B.
contains
C.
contained
D.
containing
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