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单项选择题
A.visibility
B.winds
C.sea
D.fog
单项选择题
A.stormy weather is imminent
B.that present weather conditions will continue
C.a defect in the barometer
D.increasing wind strength
单项选择题
A.moderate but easily navigated
B.calm
C.mountainous and confused
D.mountainous but fairly regular as far as direction is concerned
单项选择题
A.high relative humidity
B.frequent showers and thunderstorms
C.steep pressure gradients
D.frequent calms
单项选择题
A.steady，constant winds
B.frequent rain showers and thunderstorms
C.steep pressure gradients
D.low relative humidity
单项选择题
A.high winds
B.high overcast clouds
C.calm or light winds
D.fog or steady rain
单项选择题
A.north to south
B.south to north
C.east to west
D.west to east
单项选择题
A.3 times the depth of water
B.6 times the depth of water
C.10 times the depth of water
D.15 times the depth of water
单项选择题
A.pull the unit in the same direction that the weather is pushing it
B.pull the unit in the opposite direction that the weather is pushing it
C.tend to keep the unit on its original location over the well head
D.affect the unit's draft and inclination as maximum mooring tensions are reached
单项选择题
A.on the starboard quarter，hold course and make as much way as possible
B.2 points on the port quarter，and make as much way as possible
C.on the port bow，and make as much way as possible
D.dead ahead and heave to
