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【单选题】
已知某挖土机挖土的一次正常循环工作时间是2min，每循环工作一次挖土0.5m3，工作小组的延续时间为8h，机械正常利用系数为0.8，则其产量定额为( )m3。A.
96
B.
120
C.
150
D.
300
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E.
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