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【单选题】
在立式铣床上铣平面时,主运动是( )。A.
刀具的直线运动
B.
刀具的回转运动
C.
工件的直线运动
D.
工件的回转运动
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举一反三
【单选题】They decide to stop exporting wheat because as a result of the terrible drought, they ______ enough food to feed the nation.
A.
are out for
B.
are stuck for
C.
are ture of
D.
are exposed to
【简答题】They decide to stop exporting wheat because as a result of the terrible drought, they are ____ the weekly meeting.
【简答题】They decideto stop exporting wheat because as a result of the terrible drought, they are enough food to feed the nation.
【简答题】We grow rice in the south of the States, but in the north where it is colder they grow wheat.
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