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【判断题】
弧长变化时,焊接电弧静特性曲线的基本形状不变,只是曲线左右移动。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】Whenever he was asked why he was late for class, he would answer carelessly, always ______the same thing. A. saying B. said C. to say D. having said
【简答题】三相异步电动机定子三相绕组的接线方式有_______和___________两种。
【单选题】— Jack said the paper was too hard when he was asked why he failed the exam again.. — Well, _____.
A.
a bad penny always turns up
B.
a bad workman always blames his tools
C.
an early bird catches the worm
D.
an apple a day keeps the doctor away