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【判断题】
加工内圆锥时应加注切削液,可利于切屑排出()A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】The old man returned to the house to ______ all the doors were locked.
A.
insure against
B.
make sure
C.
assure of
D.
ensure of
【简答题】串行传输和并行传输各有什么优缺点?
【简答题】具有五个构件的机构有______绝对瞬心。 A.1 ; B.5; C. 4; D.3
【单选题】The old man returned to the house to ________ all the doors were locked.
A.
make sure
B.
insure against
C.
checked in
D.
arose from
【简答题】The man returned to work after he got( )his illness.
【简答题】A. The woman has not overcome her grief. B. The woman has returned to normal. C. The man’s mother died. D. The woman is comforting the man.