单项选择题

Manoeuvring information can not be obtained from（）.

A.construction plans
B.sea trials
C.calculation estimates
D.SMS procedure file

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单项选择题

Fog is likely to occur when there is little difference between the dew point and the（）.

A.relative humidity
B.air temperature
C.barometric pressure
D.absolute humidity

单项选择题

The company should establish and maintain procedures to control all documents and date which are relevant to（）.

A.ISM
B.SOLAS
C.DOC
D.SMS

单项选择题

The dew point temperature is（）.

A.always higher than the air temperature
B.always lower than the air temperature
C.equal to the difference between the wet and dry bulb temperatures
D.the temperature at which the air is saturated with water vapor