问答题

等离子弧切割过程不是依靠,而是靠来切割工件

答案：氧化反应,熔化

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多项选择题

How_I help them to understnd when they won’t listen to me cnB．wouldC．myD．Must32．How_I help them to understnd when they won’t listen to me cn B．would C．my D．Must

A.can
B.would
C.may
D.Must

How did you usually behave when you got rejected before ？ How will you behave when you get a rejection in the future after watching the video？

答案： open-ended