A.dispersant；detergent
B.detergent；dispersant
C.dispersant；dispersant
D.detergent；detergent
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A.oxidation resistance
B.carbon-forming tendency
C.demulsibility
D.acidity
A.lower than
B.higher than
C.as same as
D.better than
A.the worse
B.the better
C.the smaller
D.the greater
A.absolute value
B.relative value
C.constant value
D.set value
A.TAN
B.TBN
C.SAN
D.SBN
最新試題
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“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Under MARPOL Code the ship to which it applies has to carry （）
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The cetane rating of diesel fuel is an indication of the （）
Cold weather starting of a diesel engine may be made easier by（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
Using a file without a handle may result in （）