A dead reckoning (DR) plot ______.
A.must utilize magnetic courses
B.must take set and drift into account
C.should be replotted hourly
D.should be started each time the vessel’s position is fixed
第1题
A.increasing the righting moment
B.decreasing the vessel’s displacement
C.increasing the reserve buoyancy
D.shifting the CG (center of gravity) off center
第2题
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
第3题
A.solid materials such as wood or bales of fiber
B.flammable liquids
C.a piece of electrical equipment
D.combustible metallic solid
第4题
A.pronounced local heating
B.wind being pushed up a mountain
C.a warm air mass rising over a cold air mass
D.an increased lapse rate caused by advection of warm surface air
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