单项选择题X 纠错
A.the engineer officer in charge of watch
B.the deck officer in charge of watch
C.the master
D.the chief mate
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单项选择题
A.3 years after making the first entry
B.2 years after the last entry
C.3 months after last entry
D.3 years after the last entry
单项选择题
A.port state control
B.flag state control
C.fire and boat drill
D.Safety inspection
单项选择题
A.additional
B.permanent
C.temporary
D.long
单项选择题
A.detergent
B.de-oiling
C.defrosting
D.demulsifying
单项选择题
A.defrosting
B.de-oiling
C.demulsifying
D.dehumidifying
单项选择题
A.dispersant;detergent
B.detergent;dispersant
C.dispersant;dispersant
D.detergent;detergent
单项选择题
A.oxidation resistance
B.carbon-forming tendency
C.demulsibility
D.acidity
单项选择题
A.lower than
B.higher than
C.as same as
D.better than
单项选择题
A.the worse
B.the better
C.the smaller
D.the greater
单项选择题
A.absolute value
B.relative value
C.constant value
D.set value