单项选择题
Especially in adverse weather,risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit?().
A.Upwind
B.Downwind
C.Crosswind
D.Downcurrent
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Early indications of the approach of a hurricane may be all of the following EXCEPT().
A.short confused swells
B.gradually increasing white clouds (mare's tails)
C.pumping barometer
D.continuous fine mist-like rain -
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Cirrus clouds are composed primarily of().
A.ice crystals
B.water droplets
C.snow crystals
D.nitrogen -
单项选择题
An aneroid barometer reading should be corrected for differences in().
A.elevation
B.temperature
C.wind speed
D.latitude
