最新精华资料轮机英语题库英汉对比互译附谜底电气与平安课件PPT.ppt

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1、精华资料轮机英语题库英汉对比互译附谜底电气与平安The______isameasureofthephasedifferencebetweenvoltageandcurrentandisexpectedasthecosineofphaseangle.功率因数可用来表示电压与电流之间的相位差，表达成相位角的余弦。A.powerB.efficiencyC.effectivepowerD.powerfactor1891Currentchangingindirectionandrisingandfallinginvalueis______方向、大小都变化的电流是交流电。A.A.C.B.D

2、.C.C.generatorD.freshwatergenerator1892Theoperationofparallelingtwoalternatorsrequiresthevoltagestobe______andalsoinphase.两台交流发电机并联，需要电压相等，并且同相。A.zeroB.eliminatedC.differentD.equal1893The______,cagerotorinductionmotoristhefirstchoicemarinemotorinmostmodemshipsbecauseofitselectricalandmechani

3、calsimplicity.现代船舶上使用的电机都是三相电机。A.singlephaseB.twophaseC.threephaseD.fourphase1894Thestar-deltastarterisaneffectivemethodof______voltagestartingofamotor.采用Y—△启动器是电饥低电压启动的最好方法。A.increasedB.reducedC.unchangedD.Noneoftheabove1890D1891A1892D1893C1894B桂葫梗保绰社滩创染沟葱硅垫淘辐羹扰绎技邀戊寡掸瘩厚摩呕射刃行嘉巡轮机英语题库英汉对照互译附答

4、案电气与安全轮机英语题库英汉对照互译附答案电气与安全Witha______loadthevoltageandcurrentareinphase.对于纯电阻负荷，电压和电流同相。A.purelyresistanceB.capacitiveC.inductiveD.Noneoftheabove1896Increasingthetemperatureofafuelwill______itsviscosity.提高燃油的温度将降低其粘度。A.increaseB.reduceC.keepD.Noneoftheaboveistrue.1897The______isusedtomeasure

5、thevolumeofaliquidorgasthroughapipelinwithinanygivenperiodoftime.流量计用于测量在给定时间内，通过管子的液体或气体的体积。A.flowmeterB.viscometerC.micrometerD.feeler1898"gaugepressure"means______“表压”即是“超过大气压的压力”。A.vacuumB."theexcessofpressureaboveatmosphere"C."figureonagauge"D.Anyoftheabove1899Amanometerisusedtomeasure_

6、____压气计用来测量压力。A.pressureB.temperatureC.volumeD.specificgravity1900Theviscosityregulatorcontrolsthefueloiltemperature______provideoilatthecorrectviscosityforcombustion.粘度调节器通过控制燃汕的温度实现粘度的控制。A.inorderthatB.becauseofC.inordertoD.owingto1895A1896B1897A1898B1899A1900C缔稻蓟钥潞驴轰颧神豢蜡吕委胳美珊枝鞠针琵粘枪芯迈隅宜秆晓缝

7、瓢勃噎轮机英语题库英汉对照互译附答案电气与安全轮机英语题库英汉对照互译附答案电气与安全Priortoanyoverhaulworkonelectricequipment,itisimportanttoensurethecircuitsare______对电气设备检修前，应确保电路切断。A.liveB.deadC.excitedD.online1917MoistureinaD.C.motorwouldcause____水分会引起直流电机短路。A.shortcircuitB.speedupC.s