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【单选题】
TIG焊熄弧时,采用电流衰减的目的是为了防止产生 。
A.
未焊透
B.
内凹
C.
弧坑裂纹
D.
烧穿
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D.
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【单选题】以下哪个是健康普及必须遵循的原则( )
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【单选题】下列各项中，不属于业务预算内容的有( )。
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C.
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【单选题】I am really worried about his grades in the coming test because of the little use he ______ of his spare time before it.
A.
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B.
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D.
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【简答题】根据句意和首字母提示补全单词。 1. Besides after-class a _____ people like to do a lot of other things in their spare time. 2. Mary's h _____ is collecting stamps. 3. G _____ is my grandpa's favorite. He often plants...
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【单选题】综合布线系统采用建筑物人工接地体时的接地电阻不小于( )
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B.
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A.
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B.
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C.
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D.
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B.
产品生产成本预算
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销售预算
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【单选题】I am really worried about his grades in the coming test because of the little use he ______ of his spare time before it.
A.
did
B.
took
C.
got
D.
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查看完整题目与答案
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