Many vessels are provided with flume tanks，which also have a dump tank located under the flume tanks. In the event the ship is damaged，you could dump the flume tanks into the dump tank which would（）.

单项选择题In ship construction，bulkheads in the quarters are generally（）.

A.structural
B.watertight
C.non-structural
D.continuous

单项选择题In a twin screw ship going half-ahead，both screws turning outboard and the rudder amidships，no current or wind，the vessel will（）.

A.Move bodily to port
B.Move bodily to starboard
C.Move in a zig-zag motion
D.Steer a fairly straight course

单项选择题Flanking rudders effect a vessel’s heading because of the（）.

A.effect of the propeller flow on the rudders
B.water flow due to the vessel's movement through the water
C.tunnel affect of the water flow past opposing rudders
D.discharge current being channeled to impinge on the vessel's deadwood

单项选择题As to the stained plates，the fault lies（）you.

A.on
B.to
C.up
D.with

单项选择题A virtual rise in the center of gravity may be caused by（）.

A.filling a partially filled tank
B.using an on board crane to lift a freely swinging heavy object
C.emptying a partially filled tank
D.transferring ballast from the forepeak to the after peak