A.help
B.good
C.use
D.worth
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A.to keeping you
B.to kept you
C.to have kept you
D.kept you
A.will do
B.has done
C.had done
D.will have done
A.have had
B.had have
C.had had
D.would have had
A.as soon as
B.as well as
C.as soon as possible
D.as early as possible
A.sample
B.receipt
C.record
D.quantity
最新試題
The shipboard oil pollution emergency plan will be invalid after （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
To proceed to the assistance of a ship in distress is（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Diesel engine air start system check valves are opened by （）
（） is not installed on the main switchboar.
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Cold weather starting of a diesel engine may be made easier by（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.