An unstable upright equilibrium position on a vessel means that the metacenter is ______.
A.lower than the center of gravity
B.at the same height as the center of gravity
C.higher than the baseline
D.on the longitudinal centerline
In a weather report，POSITION GOOD means that the position is______．A.a good oneB.reliableC.is easy to be fixedD.Obtainable
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In weather report, POSITION GOOD means that ______.A.the position is suitableB.the position is reliableC.the position is changeableD.the position is fixable
单选题A neutral equilibrim position for a vessel means that the metacenter is（）.A lower than the keelB at the same height as the center of gravityC exactly at midshipsD at the center of the waterplane area
单选题Stable equilibrium for a vessel means that the metacenter is（）.A at a lower level than the baselineB on the longitudinal centerlineC higher than the center of gravityD at amidships
单选题In a weather report, position good means that the position is（）.A a good oneB reliableC is easy to be fixedD obtainable
单选题If the cause of a sudden severe list or trim is negative initial stability，counter flooding into empty tanks may（）.A increase the righting momentB cause an increase in the righting armC bring the unit to an upright equilibrium positionD cause the unit to flop to a greater angle
单选题Magnetic variation changes with a change in（）.A the vessel's headingB sea conditionsC seasonsD the vessel's position
