[单选题] “380V/220V Y/△” noted on the nameplate of a non-synchronous motor means that .

1、[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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2、[单选题]A segregated ballast system is a system where _____.

• A、all ballast is processed through the oily water separator
• B、 ballast is taken on and discharged through a separate main deck riser
• C、 ballast and cargo tanks are separated by cofferdams
• D、 all ballast lines, tanks, and pumps are independent of those used for oil

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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]To proceed to the assistance of a ship in distress is .

• A、an obligation for masters of passing by ships
• B、 optional for masters of passing by ships when the weather is fine
• C、 prohibited by the Convention SOLAS, 1974, as amended
• D、 prohibited by the convention STCW 78/95

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5、[单选题]Which of the following is true? .

• A、A company should develop an ISM and implement it
• B、 A company implementing an ISM properly may obtain a DOC
• C、 Once a company obtains its DOC, each vessel of this company will obtain a SMC
• D、 DOC is valid for 60 months unless “major non-conformity” is found

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