[单选题] ____ belongs to emergency power supplying equipments.

1、[单选题]According to Annex I of MARPOL 73/78, the instantaneous discharging rate of the oily waste from cargo tanks of oil tankers must be lower than .

• A、30 liters per nautical mile
• B、 15 liters per nautical mile
• C、 30 ppm
• D、 15ppm

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2、[单选题]The abbreviation "GM" is used to represent the _____.

• A、height of the metacenter
• B、 fighting arm
• C、 righting moment
• D、 metacentric height

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3、[单选题]An oil in water monitor is required in order to measure _____.

• A、the oil content in water
• B、 the water content in fuel oil
• C、 the water level in bilge well
• D、 the oil level in bilge well

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4、[单选题]According to Anneal I of MARPOL 73/78, the discharging oil content of the machinery space bilges must be lower than .

• A、30 liters per nautical mile
• B、 15 liters per nautical mile
• C、 30 ppm
• D、 15ppm

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5、[单选题]Which of the followings is not an indication of a bad maintenance? _____________.

• A、a pipe with welded connections
• B、 a pipe with several clips
• C、 a cement box
• D、 a leaking valve

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