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【单选题】
02-71滚动导靴的工作特点是( )。A.
需要在导轨工作面加油
B.
摩擦损耗减小
C.
与导轨摩擦较大
D.
舒适感差
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反馈参考答案：
举一反三
【单选题】What prevented your plan ?
A.
from being carried out
B.
from carrying out
C.
to carry out
D.
to be carried out
【单选题】June 15,2000 Dear Sir, Your shipment of twelve thousand 'Smart' watches was received by our company this morning. However, we wish to make a number of complaints concerning the serious delay in delive...
A.
introduction.
B.
apology.
C.
complaint.
D.
recommendation.
【单选题】Three students were chosen to________the experiment. [ ]
A.
take out
B.
look out
C.
carry out
D.
watch out
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