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【单选题】
设图示回转体的材料均匀,制造精确,安装正确,当它绕 AA 轴线回转时是处于 状态。A.
静不平衡
B.
静平衡
C.
完全不平衡
D.
动平衡
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皮皮学刷刷变学霸
举一反三
【单选题】— I called you yesterday evening. But nobody was in. — Sorry, I _____ with parents in the park. [ ]
A.
take
B.
took a walk
C.
was taking a walk
D.
are taking a walk
【单选题】– I called you yesterday evening, but there was no answer. --Oh, I am sorry. I __________ dinner in my friend’s home.
A.
have
B.
had
C.
was having
D.
have had
【简答题】L'internet (avoir) un avenir magnifique.
【单选题】When you phoned me yesterday evening, I _______ the housework and was starting to take a bath.
A.
had just finished
B.
was finishing
C.
have already finished
D.
was going to finish
【简答题】嗯,还是那样呗。
【简答题】L'Internet (avoir) ________ un avenir magnifique.
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