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【单选题】
埋弧焊时,其电弧静特性曲线为( )。A.
下降特性和平特性
B.
水平特性和上升特性
C.
下降特性
D.
水平特性
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皮皮学刷刷变学霸
举一反三
【单选题】Transfer form. needs to be signed by your()at your current institution.
A.
international advisor
B.
teacher
C.
department director
D.
classmates
【单选题】The type of current which will have the greatest effect on the course made good for your vessel is ____.
A.
one flowing in the same direction as your course steered
B.
one flowing in the opposite direction as your course steered
C.
one that flows at nearly right angles to your course steered
D.
a rotary current in which the direction of current flow constantly changes
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