單項選擇題0f the following, the most important consideration for a tank vessel is（）.

A.GM
B.the vertical center of gravity
C.the longitudinal center of gravity
D.the stress on the hull


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1.單項選擇題0f the general methods of stowing bagged cargo, which allows maximum ventilation?（）.

A.Brick method
B.Cross tier method
C.Full-bag method
D.Half-bag method

2.單項選擇題0il product samples should be taken from the（）.

A.dock riser
B.ships cargo tanks
C.shore tank discharge
D.All of the above

3.單項選擇題0n a single-screw vessel the stern frame（）.

A.furnishes support to the rudder, propeller shaft, and transom frame
B.provides foundations for after mooring winches
C.provides foundation for the main propulaion engines
D.transfers the driving force of the propller to the hull

4.單項選擇題0n a vesel proceeding from a very cold to a warm climate with a cargo of a nonhygroscopic nature in the holds, which is true?（）.

A.Danger of heavy ship sweat exists; constant and vigorous ventilation is required
B.There is danger of heavy cargo sweat if outside air is introduced by ventilation
C.There is little danger of ships sweat, slight possibility of cargo sweat; moderate ventilation is needed
D.The po sibility of any sweat problem, either cargo or ship, is frame

5.單項選擇題0n a vessel, the keel is the primary strength member of the lower hull form in which direction?（）.

A.transverse
B.disagonal
C.longitudinal
D.vertical