问题
问答题
CO2气体保护焊有哪些工艺参数
答案
参考答案：CO2气体保护焊的工艺参数有：(1)电弧电压及焊接电流；(2)焊接回路电感；(3)焊接速度；(4)CO2气体流量；(5)CO2气体纯度；(6)焊丝伸出长度；(7)电源极性。
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CO2气体保护焊有哪些工艺参数
参考答案：CO2气体保护焊的工艺参数有：(1)电弧电压及焊接电流；(2)焊接回路电感；(3)焊接速度；(4)CO2气体流量；(5)CO2气体纯度；(6)焊丝伸出长度；(7)电源极性。
每年高考之前总会出现“高考移民”，他们设法到录取分数线较低的省份参加考试。你班同学就此展开讨论，提出了以下两种相反意见：
说明：（1）.词数100左右; （2）.标题和开头段已经给出。 Students on the Move for Their Exams—Fair or Unfair? Every year some students from high-score areas move to other provinces to take the Entrance Examination of the Colleges. Recently we had a discussion about this. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ |