單項(xiàng)選擇題A tank which carries liquid is dangerous to the stability of a vessel when it is().

A.low in the vessel
B.completely empty
C.completely full
D.slack


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1.單項(xiàng)選擇題A semisubmersible which will not remain upright and will assume a list either to port or starboard is likely to have().

A.a large TCG
B.a negative GM
C.excessive ballast
D.insufficient deck load

2.單項(xiàng)選擇題A disk with a horizontal line through its center,equivalent to the summer load line,is called the().

A.deadrise mark
B.maximum allowable draft mark
C.plimsoll mark
D.tonnage mark

3.單項(xiàng)選擇題A deep draft VLCC (100,000 DWT+) navigating in a narrow channel or canal().

A.draws more water than when underway in deep water
B.draws less water with an increase in speed
C.requires less power for a given speed
D.steers better under full power

4.單項(xiàng)選擇題A current moving across a lock entrance toward the river or toward the dam is called a(n)().

A.cutoff
B.outdraft
C.lockwash
D.springpool

5.單項(xiàng)選擇題A common occurrence when a vessel is running into shallow water is that().

A.the wake is less pronounced
B.the vessel is more responsive to the rudder
C.squat will cause a decrease in bottom clearance and an increase in draft
D.All of the above