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【简答题】
计算: (-11) 2 + 3 -64 -(- 5 ) 2 .
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【简答题】Conversation 3 Steve and Tom are (5) ___________ . Steve's (6) ___________ will be away tomorrow.
【简答题】A.Tom is coming for dinner. B.Tom won't be able to come. C.Tom will give a dinner party. D.Tom won't be away on business.
【判断题】在液压传动中,人们利用液体来传递动力和运动。
A.
正确
B.
错误
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【单选题】在液压传动中人们利用 ( )来传递动力和运动。
A.
固体
B.
液体
C.
气体
D.
绝缘体
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