试题习题、尽在百度仔细审题、认真作答专题限时集训(二十)主旨大意题A(2016·南京三模)Anelectriccarispoweredbyallelectricmotorinsteadofagasolineengine
Theelectricmotorgetsenergyfromacontroller,whichregulatestheamountofpower,andthisisbasedonthedriver'suseofanacceleratorpedal
Theelectriccar(alsoknownaselectricvehicleorEV)usesenergystoredinitsrechargeablebatteries,whicharerechargedbycommonhouseholdelectricity
Unlikeahybridcar,whichisfueledbygasolineandusesabatteryandmotortoimproveefficiency,anelectriccarispoweredexclusivelybyelectricity
Historically,EVshavenotbeenwidelyadoptedbecauseoflimiteddrivingrangebeforeneedingtoberecharged,longrechargingtime,andalackofcommitmentbyautomakerstoproduceandmarketelectriccarsthathaveallthecomfortsofgas-poweredcars
That'schanging
Asbatterytechnologyimprovesbysimultaneouslyincreasingenergys