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（）behalfofmyowners,Igiveyoumyformalnotice.

At
B. On
C. Of
D. In

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（）anumberofhome-madenauticalinstrumentsandforeign-mademetersonthebridge.

A. Have
B. Has
C. Thereis
D. Thereare

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（）asthechemicalextinguisheragent,shouldbeusedforaanelectricfire.

A. Drychemicalorfoam
B. Foamorsodaacid
C. carbondioxideorfoam
D. carbondioxideordrychemical

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Yourvesselisequippedwithtotallyenclosedlifeboats.Whichstatementistruewhentheboatisenvelopedinflames?（）.

A. Theventilatorswillautomaticallyclosebytheactionoffusiblelinks
B. Themotortakesitsairsupplyfromoutsidethelifeboattopreventasphyxiationofthecrew
C. Awaterspraysystemtocooltheoutsideoftheboatisoperatedbyahigh-volumemanualpump
D. Anairtankwillprovideabouttenminutesofairforthesurvivorsandtheengine

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下列选项中（）不属于标准化操作卡的编前要求。

A. 内容完整准确
B. 符合产品和工艺要求
C. 跨班次之间相互独立
D. 及时更新与维护

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（）behalfofmyowners,Igiveyoumyformalnotice.

At B. On C. Of D. In

（）anumberofhome-madenauticalinstrumentsandforeign-mademetersonthebridge.

（）asthechemicalextinguisheragent,shouldbeusedforaanelectricfire.

Yourvesselisequippedwithtotallyenclosedlifeboats.Whichstatementistruewhentheboatisenvelopedinflames?（）.

下列选项中（）不属于标准化操作卡的编前要求。

At
B. On
C. Of
D. In