航海英语船舶货运基本知识章节练习(2018.03.09)

单项选择题
The ship’s draught forward is same as her draught aft.This condition is named as（）.
A.even keel
B.even trim
C.even draught
D.even float
单项选择题
The existence of liquids in partially full tanks or compartments of a ship causes a virtual rise in the height of the（）.
A.metacenter
B.center of buoyancy
C.center of flotation
D.center of gravity
单项选择题
If a vessel takes a sudden，severe list or trim from an unknown cause，you should FIRST（）.
A.determine the cause before taking countermeasures
B.assume the shift is due to off-center loading
C.counterflood
D.assume the cause is environmental forces
单项选择题
A quick and rapid motion of a vessel in a seaway is an indication of a(n)（）.
A.large GM
B.high center of gravity
C.excessive free surface
D.small GZ
单项选择题
Progressive flooding may be indicated by（）.
A.ballast control alarms
B.excessive draft
C.excessive list or trim
D.a continual worsening of list or trim
单项选择题
Angular motion about the longitudinal axis of a vessel is known as（）.
A.pitch
B.surge
C.sway
D.roll
单项选择题
During counterflooding to correct a severe list or trim aggravated by an off-center load，a ship suddenly takes a list or trim to the opposite side. You should（）.
A.continue counterflooding in the same direction
B.continue counterflooding，but in the opposite direction
C.immediately stop counterflooding
D.deballast from the low side
单项选择题
The angular motion of a ship in the athwartship is termed（）.
A.pitching
B.yawing
C.rolling
D.tracking
单项选择题
At an angle of loll，the capsizing moment is（）.
A.maximum
B.negative
C.positive
D.zero
单项选择题
A vessel loads edible oil in a deep tank through a manhole at the midlength of the tank. In order to fill the tank to maximum capacity，what trim should the vessel have?（）
A.Down by the bow
B.Down by the stern
C.Down by either the bow or stern
D.In level trim