皮皮学，免费搜题
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【单选题】
在“机床锁定”(FEED HOLD)方式下,进行自动运行,( )功能被锁定。A.
进给
B.
刀架转位
C.
主轴
D.
主轴和进给
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皮皮学刷刷变学霸
举一反三
【单选题】The three-month-old baby smiled as if he _________ what his mother said.
A.
understand
B.
could understand
C.
understanded
D.
had understood
【简答题】The baby smiled as if he _____(understand) what his mother _____(say).
【单选题】When he smiled it was as if you had just 29 him the funniest joke on earth. 29.
A.
made
B.
told
C.
played
D.
given
【单选题】The baby smiled as if he ______ what his mother said.
A.
was understanding
B.
understood
C.
h ad understood
D.
understands
【单选题】The boy smiled as if he ______ what his mother said.
A.
understands
B.
understood
C.
understanding
D.
have understood
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