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單項(xiàng)選擇題

Which instrument is used to predict the approach of a low pressure system（）.

A.Anemometer
B.Fathometer
C.Barometer
D.Thermometer

單項(xiàng)選擇題

Which effect does speed through the water have on a vessel which is underway in shallow water （）.

A.A decrease in the speed results in a decrease in steering response and maneuverability
B.An increase in speed results in the stern sucking down lower than the Bow
C.An increase in speed results in the vessel rising on an even plane
D.A decrease in speed results in the vessel sucking down on an even plane