單項(xiàng)選擇題After an IOPP Certificate is issued to an inspected vessel，how many other surveys of the vessel’s pollution prevention equipment are conducted during the period of validity of the certificate?（）

A.None
B.One
C.Two
D.Three


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1.單項(xiàng)選擇題ACCIDENTAL ESCAPE OF OIL OUT OF A TANK WHEN IT GETS TOO FULL BECAUSE PUMPING WAS NOT STOPPED IN TIME defines（）.

A.Overloading
B.Over discharging
C.Overflow
D.Overtaking

2.單項(xiàng)選擇題A wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from（）.

A.filling completely
B.developing free surface
C.developing free surface moment
D.collapsing

3.單項(xiàng)選擇題A virtual rise in the center of gravity of a ship may be caused by（）.

A.filling a partially filled tank
B.using fuel from a pressed fuel tank
C.emptying a partially filled tank
D.transferring pipe from the setback area to the pipe rack

4.單項(xiàng)選擇題A vessel is equipped with cross-connected deep tanks. In which situation should the cross-connection valve be closed?（）.

A.The tanks lie above the waterline and are filled
B.The tanks are partially filled with dry cargo
C.The tanks are partially filled with liquid cargo
D.The tanks are filled and lie below the waterline

5.單項(xiàng)選擇題A tankerman who permits or causes oil to go into a navigable waterway may be punished federally by（）.

A.fine
B.imprisonment
C.suspension or revocation of tankerman's document
D.All of the above