A.heavy rain within six hours
B.a decrease in wind velocity
C.a change in the present weather conditions
D.that fog will soon set in
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A.Straight line
B.Arc
C.Parabola
D.Hyperbola
A.large GM
B.high center of gravity
C.excessive free surface
D.small GZ
A.In the lower level of the pumproom
B.In the middle level of the pumproom
C.In the upper level of the pumproom
D.On the deck outside the pumproom
A.atmospheric pressure
B.wind speed
C.relative humidity and dew point
D.wind chill factor
A.stern is drawn to the bank as the bow sheers off
B.bow sheers toward the bank
C.vessel continues in a straight line，but with greatly reduced maneuverability
D.vessel will be drawn bodily into the bank unless the engines are stopped
最新試題
The latest known details of lights are given in（）.
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.
Mean high water is the average height of（）.
After jacking down your liftboat you have an unexpected list.You find that the only cause of this list must be a flooded leg.Your next course of action should be to（）.
Mariners not entering the port are（）to keep at least one mile off.
Lines drawn through points on the Earth having the same atmospheric pressure are known as （）.
After launching，an inflatable raft should be kept dry inside by（）.
Of the following，（）is not likely found in The Mariners Handbook.
A sweep oar is an oar that is（）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.