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【多选题】
用偏移命令“offset”偏移对象时A.
必须指定偏移距离
B.
可以指定偏移通过特殊点
C.
可以偏移开口曲线和封闭线框
D.
原对象的某些特征可能在偏移后消失
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举一反三
【单选题】Would you mind______it to me once again?
A.
explaining
B.
to explain
C.
explain
D.
explained
【单选题】The sentence needs __________ once more.
A.
to explain
B.
explaining
C.
being explained
D.
to be explained it
【单选题】_________ I explained on the phone, your request will be considered at the next meeting.
A.
． When
B.
． After
C.
． As
D.
． Since
【单选题】The sentence wants ____ once more.
A.
explaining
B.
to explain
C.
being explained
D.
explained
【单选题】In general， the old man is generous. But ____， he was mean to an old beggar. A．at once B．once aga
A.
22.In general， the old man is generous. But ____， he was mean to an old beggar. A．at once
B.
once again
C.
for once
D.
once over
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