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【单选题】
若将一曲柄摇杆机构转化为双曲柄机构可将 。A.
原机构曲柄为机架
B.
原机构连杆为机架
C.
原机构摇杆为机架
D.
无法转化
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A.
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【单选题】Both Einstein and Edison were called "slow to learn" and ______ as idiots by their teachers.
A.
written off
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turned off
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grabbed off
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