單項選擇題Increasing the number of slack liquid tanks has effect of raising the().

A.uncorrected KG
B.maximun allowed KG
C.virtual height of the center of gravity
D.metacentric height


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2.單項選擇題Initial stability is indicated by().

A.GM
B.KM
C.deck load
D.maximum allowed KG

3.單項選擇題It is sometimes necessary to moor bow and stern to two mooring buoys in order to().

A.avoid any swing in a restricted space
B.prevent to touch with other vessels
C.make a convenience of cargo discharging

5.單項選擇題Jettisoning weight from topside().

A.return the vesselto an even keel
B.reduces free surface effect
C.lowers the center of gravity
D.raises the center of buoyancy