题目内容

UniversalmotorswilloperateonACorDCcurrent,andaregenerallyfoundin（）

A. portabletools
B. largepumpmotors
C. turboelectricmainmotors
D. forceddraftfans

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Todeterminewhatnavigationlightsandday-shapesmustbedisplayedonmobileoffshoredrillingunitsundertow，youshouldcheckthe（）.

AmericanBureauofShippingclassificationrules
B. InternationalRegulationsforPreventingCollisionsatSea
C. SafetyofLifeatSeaConvention
D. MineralsManagementServicerules

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机器和机构的总称是（）。

A. 机构
B. 零件
C. 机械

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WhatistheperiodofvalidityoftheSOLASrequiredCargoShipSafetyConstructionCertificate?（）

A. 12months
B. 24months
C. 48months
D. 60months

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AshiprequiredtocarryanOilRecordBookmustmaintainthebookonboardfor（）.

A. oneyear
B. twoyears
C. threeyears
D. fouryears

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UniversalmotorswilloperateonACorDCcurrent,andaregenerallyfoundin（）

A. portabletools B. largepumpmotors C. turboelectricmainmotors D. forceddraftfans

Todeterminewhatnavigationlightsandday-shapesmustbedisplayedonmobileoffshoredrillingunitsundertow，youshouldcheckthe（）.

机器和机构的总称是（）。

WhatistheperiodofvalidityoftheSOLASrequiredCargoShipSafetyConstructionCertificate?（）

AshiprequiredtocarryanOilRecordBookmustmaintainthebookonboardfor（）.

A. portabletools
B. largepumpmotors
C. turboelectricmainmotors
D. forceddraftfans