When fire pumps are used for other than firefighting service，each pipe connecting the other service (except for branch lines used for deck washing) must have a（）.

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  A . use different fire hose pressures B . use fire hoses of different sizes C . not attack the fire from opposite sides D . not wear protective clothing

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• On a ship，a fire pump may be used for other purposes if（）.

  A . the other services are run off a reducing station with a pressure gage B . a separate fire pump is available for use on the fire main C . all other services are operated by a manifold near the pump D . All of the above

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• Logbooks are used to record the events occurring when（）.

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• When you are firing a pyrotechnic distress signal，it should be aimed（）.

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• （）are used to ensure that ships don’t discharge oil when pumping out oily water from any oil contaminated space.

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• When using carbon dioxide to fight a fire on a bulkhead，the CO2 should be applied（）.

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• What are the most important reasons for using water fog to fight fires?（）

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• Hydraulic pumps most commonly used in steering systems are of the （）.

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• Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.

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• Multiple fire pumps may be used for other purposes provided that one pump is（）.

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• A fire pump may be used for other purposes if（）.

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• What does the term head mean when applied to a fire pump?（）

  A . Length of the discharge pipe B . Height of the discharge pipe C . Difference between the discharge and suction pressures D . Sum of discharge and suction pressure

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• You are transferring fuel from the storage tanks to the day tanks by means of an electric fuel oil transfer pumpIf the pump motor catches fire, you would FIRST （）.

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• When the relief valve is used as a constant pressure valve, it is connected to the outlet of the hydraulic pump to ensure that the outlet pressure of the hydraulic system (pump) is constant.

  A:正确; B:错误

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