单项选择题

If the sling bumps（）the beams,serious accidents may follow.

A.at
B.on
C.into
D.against

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单项选择题

If the survival craft is not loaded to full capacity,the personnel should be（）.

A.loaded more on the port side forward
B.loaded equally on both sides with more forward
C.loaded equally on both sides with more aft
D.allowed to sit anywhere

单项选择题

If the vertical center of gravity (VCG)of a ship rises 1.7 feet,the righting arm (GZ) for the various angles of inclination will（）.

A.decrease
B.increase
C.remain unchanged
D.be changed by the amount of GG'x cosine of the angle