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【判断题】
()编制装配工艺卡时不用考虑可能发生的焊接变形。A.
正确
B.
错误
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举一反三
【简答题】Years ago, when I started looking for my first job, wise advisers advised,' Barbara, be enthusiastic (热情的) ! Enthusiasm will take you further than any amount of experience. 'How right they were! 'Noth...
【多选题】选择下列( )试剂能将苯酚和苯胺混合物分离。
A.
1.0mol/LHCl
B.
1.0mol/LNaHCO 3
C.
1.0mol/L 热 HNO 3
D.
1.0mol/LNaOH
E.
乙醚
【简答题】Years ago, when I started looking for my first job, wise advisers advised, “Barbara, be enthusiastic（热情的）! Enthusiasm will take you further than any amount of experience.” How right they were! “Nothi...
【多选题】选择下列( )试剂能将苯酚和苯胺混合物分A.1.0mol/LHCl
A.
1.0mol/LNaOH
B.
1.0mol/LNaHCO3
C.
1.0mol/L 热 HNO3
D.
乙醚
【简答题】Years ago, when I started looking for my first job, wise advisers advised, 'Barbara, be enthusiastic (热情的)! Enthusiasm will take you further than any amount of experience. ' How right they were! 'Noth...
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