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【判断题】
用数字0,1,2可以组成4个3位数(每个数字只出现一次)。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】So the welding gun is connected to the wire feeder, and the wire feeder to the welding machine.
【简答题】影响个体成功的人格特征有哪些?它们的作用机制是什么?
【简答题】Where is the wire feeder in a welding circuit?
【简答题】Does a wire feeder feed the wire automatically and continuously?
【单选题】The wire ____ automatically and continuously by a wire feeder.
A.
feeds
B.
is fed
C.
C
D.
D
【简答题】Is wire feeder a piece of welding equipment?
【单选题】A wire feeder is between _____ and _____.
A.
the welding machine, the welding gun
B.
the welding gun , the workpiece
C.
C
D.
D
【判断题】The wire held in the gun is fed automatically and continuously by a wire feeder.
A.
正确
B.
错误
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【简答题】So the welding gun is connected to the wire feeder, and the wire feeder to the welding machine.
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