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【单选题】
在机械加工时,机床.夹具.刀具和工件构成了一个完整的系统称为()。A.
计划和设计系统
B.
工艺系统
C.
测量系统
D.
计算和编程系统
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【简答题】Turn these sentences from active voice into passive voice. Mary helps John.
【简答题】Turn these sentences into passive voice. 1) Dr. Smith takes good care of Mrs. Black. Mrs. Black _______________________ by Dr. Smith. 2) Students in Class One make use of many reference books. Many re...
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【简答题】Read these sentences and write in the missing prefix. The new government’s first policy will be to nationalize all state-owned industries and turn them into private businesses. (__________)
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