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【单选题】
数控编程指令G42代表 。(基础知识)A.
刀具半径左补偿
B.
刀具半径右补偿
C.
刀具半径补偿撤销
D.
刀具长度补偿
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反馈参考答案：
举一反三
【简答题】选中对象,对象中除显示虚线外,还显示出其夹点,夹点默认的颜色为()色
【简答题】阅读理解。 Li Ming is a school boy .He is twelve .He lives in Shanghai .He studies in the No.3 Middle School . He gets up at half past five every day .He reads English and Chinese in the morning .He has br...
【简答题】Li Ming is a school boy .He is twelve .He lives in Shanghai .He studies in the No.3 Middle School .He gets up at half past five every day .He reads English and Chinese in the morning .He has breakfast...
【单选题】Li Ming ______ English words every day. [ ]
A.
study
B.
studies
C.
has studied
D.
will study
【单选题】Li Ming studies hard he can pass the exams.
A.
because
B.
as soon as
C.
so that
D.
when
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