There are a lot of computers in the lab,and they need professional to make sure they can be in a good state.
#80920
A
operation
B
maintenance
C
service
D
advice
推荐题目
Food prices are climbing around the world because farmers can't ____ demand for grain．
#81450
A
catch up with
B
keep up with
C
grow out of
D
put up with
While the computer becomes more and more powerful, I don’t think it will completely ___________ teachers in class.
#69593
A
slow down
B
break away from
C
take place
D
take the place of
We should protect the environment, for plenty of fresh air ________ to good health.
#72963
A
adjust
B
contributes
C
distributes
D
attributes