题目内容

Self-exciteda-cgeneratorwith"erroroperated"voltagecontrolsystemsdrawthefullexcitationpowerforthemachineterminalsThisdispenseswiththecurrenttransformers,reactorsandcapacitorsnecessaryforaccuratecompounding,butrenderstheexcitationsystemvulnerabletovariationsinitsoutputvoltageWhichofthefollowingiscorrectaboutthegeneratormentionedaccordingtothesentencesabove（）.

A. Itconsumesnoexcitationpower
B. Ithascurrenttransformers
Componentsareneededforaccuratecompounding
D. Itsexcitationsystemisvulnerabletovoltagevariations

查看答案

搜索结果不匹配？点我反馈

更多问题

Incaseofashipoflessthan400tonsgrosstonnageotherthananoiltankerwhistoutsidethe（），theAdministrationshallensurethatitisequippedasfaraspracticableandreasonablewithinstallationstoensurethestorageofoilresidueswiththerequirementsofMARPOL73/78.

A. specialarea
B. nationalwaters
C. thedesignatedzone
D. thedesignatedchannels

Intheenginedepartment,the（）islookedupontoprovidetheleadershipthatisneeded.

A. captain
B. chiefengineer
C. chiefofficer
D. chiefmotorman

Nodischargeintotheseashallcontain（）inquantitiesorconcentrationswhicharehazardoustothemarineenvironmentorchemicalsorothersubstancesintroducedforthepurposeofcircumventingtheconditionsofdischargespecifiedinMARPOL73/78.

A. chemicals
B. chemicalsorothersubstances
C. substances
D. othersubstances

行政处罚听证对当事人而言（）

A. 是权利
B. 是义务
C. 既是权利又是义务
D. 既非权利又非义务