单项选择题Which of the following represents the maximum percent of oxygen by volume required to be achieved by a ship’s inert gas system, prior to the commencement of crude oil tank washing?()

A.6%
B.8%
C.10%
D.12%


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A.Class A
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D.Class D

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A.class A
B.Class B
C.Class C
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3.单项选择题The fire of fuel oil is classified as() fire.

A.Class A
B.Class B
C.Class C
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4.单项选择题The fire of sodium is classified as() fire.

A.Class A
B.Class B
C.Class C
D.Class D

7.单项选择题There is a danger of the starting current that the windings are burnt out()

A.to increase
B.to be so increased
C.increased
D.being so increased

8.单项选择题I find ()

A.it difficult for them to finish the job in time
B.difficult for them to finish the job in time
C.they have much difficulty to finish the job in time
D.that difficult for them to finish the job in time

9.单项选择题The pollution prevention regulations do not apply to the transfer or discharge of ()

A.bunker fuel for use aboard ship
B.lubricating oil for use aboard ship
C.coconut oil carried in tank vessels
D.oily water from a ships bilges

10.单项选择题The first step you would take in helping an unconscious victim who is not breathing is()

A.stop bleeding
B.open airway
C.mouth-to-mouth respiration
D.call for help