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【简答题】
I have two uncles: one is a doctor and ______ is a teacher. A. the other B. another C. other D. another one
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【单选题】Before reassembling any machinery, you should _____.
A.
replace all bearings regardless of length of service
B.
apply a heavy coat of oil to all mating surfaces
C.
clean any corroded surfaces and file all burrs smooth
D.
coat all parts with alemite grease
【单选题】If the tyre leaks, you should first ______.
A.
check the valve
B.
replace the tyre
C.
go to the repairman
D.
pump some air into the tube
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