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【判断题】
在使用立式钻床时,要经常检查润滑系统的供油情况。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】John is very diligent, but his pay isn't sufficient enough for his work.
A.
good
B.
much
C.
legal
D.
sound
【单选题】Failure to advertise (could) result in either (reduced) sales and (less) profit (nor) legal actions.
A.
could
B.
reduced
C.
less
D.
nor
【单选题】He shifted his position a little in order to alleviate the pain in his legA.control ###SX
A.
He shifted his position a little in order to alleviate the pain in his leg A.control
B.
ease
C.
experience
D.
suffer
【简答题】造成臭氧层破坏的主要气体是什么?破坏机理是什么 ?
【判断题】A non-firm offer is an expression for accepting the transaction terms with a lega l promise.
A.
正确
B.
错误
【单选题】His grandfather made a real difference to his life by leaving him a generous
A.
legend
B.
legacy
C.
legion
D.
heritage
【简答题】造成臭氧层破坏的主要气体是什么？破坏机理是什么？
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