[单选题] The oil discharge monitoring system in the oil tanker vessels is used for detecting the amount of oil discharged overboard to ensure that it does not exceed .

1、[单选题]Which of the following statements describes one of the functions of the ballast system?

• A、To permit flooding of any fuel oil storage tank on any class of ship
• B、 To use it as a secondary service system
• C、 To store reserve feed or potable water for extended cruises
• D、 To stabilize the ship by flooding certain designed tanks with seawater

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2、[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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3、[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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4、[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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5、[单选题]Which of the following about ISM Code is not right? .

• A、It aims to ensure safety at sea
• B、 It aims to avoid damage to the environment
• C、 It aims to prevent human injury or loss of life
• D、 It aims to provide a method to run a company

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