A.spends；in
B.spent；on
C.has spent；on
D.had spent；in
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最新試題
Under MARPOL Code the ship to which it applies has to carry （）
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To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
Using a file without a handle may result in （）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）