题目内容

Administrationsshouldbearinmindthesignificanceof（）inmaintainingsafetyoflifeandpropertyatseaandinpreventingmarinepollution.

A. advancednauticalequipment
B. advancedperformancemainengines
C. emergencyequipment
D. communicationandlanguageskills

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A-framesandcylinderblockisheldtogetherby（）toformarigidstructure.

A. connectingrods
B. pistonrods
C. tierods
D. jack-bolts

A-framesaremountedonthebedplateandsupport（）andcylinderblock.

A. themainbearing
B. thecylindercover
C. theentablature
D. thesump

关闭保证金账户，受理渠道为（）。

A. 银行柜台
B. 证券公司营业部柜台
C. 网上银行
D. 快易理财

Afterensuringthatthe（）iscorrectthebearingclearanceshouldbechecked.

A. nap
B. gap
C. nip
D. deflection