安徽2025自考[大功率半导体科学]英语二易错题专练.docxVIP

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安徽2025自考[大功率半导体科学]英语（二）易错题专练

一、单项选择（共10题，每题1分）

说明：下列每题均有四个选项，请选出最佳答案。

1.Thedevelopmentof______hassignificantlyimprovedtheefficiencyofpowerelectronicsinAnhuisindustrialsector.

A.high-frequencytransformers

B.low-powersemiconductors

C.magneticresonancetechnology

D.thermalmanagementsystems

2.Inthecontextofpowersemiconductordevices,______isacriticalfactoraffectingthermalperformance.

A.voltagebreakdown

B.switchingfrequency

C.junctiontemperature

D.carriermobility

3.______iswidelyusedinAnhuiswindpowergenerationsystemsforitshighefficiencyandreliability.

A.IGBTs(InsulatedGateBipolarTransistors)

B.MOSFETs(Metal-Oxide-SemiconductorField-EffectTransistors)

C.Diodes

D.Thyristors

4.The______layerinaSiC(SiliconCarbide)MOSFEThelpsreduceon-stateresistance.

A.drift

B.channel

C.gateoxide

D.substrate

5.______isacommonissueinhigh-powersemiconductordevicesoperatinginharshenvironments.

A.Leakagecurrent

B.Forwardvoltagedrop

C.Gatecharge

D.Turn-offloss

6.Anhuispowergridrequires______tohandlefluctuationsinrenewableenergysources.

A.PWM(PulseWidthModulation)control

B.DCM(DiscontinuousConductionMode)

C.H桥拓扑

D.LLCresonantconverter

7.The______regioninapowerdioderepresentsthereversebiascondition.

A.forward

B.reverse

C.zero-bias

D.breakdown

8.______isakeyparameterinevaluatingthethermalconductivityofpowerpackagingmaterialsinAnhui.

A.Dielectricconstant

B.Thermalexpansioncoefficient

C.Breakdownvoltage

D.On-stateresistance

9.The______effectcanleadtoincreasedpowerlossinMOSFETsathighfrequencies.

A.Millereffect

B.Capacitivecoupling

C.Parasiticinductance

D.Bodyeffect

10.______isacriticaldesignconsiderationforpowermodulesinAnhuiselectricvehicleindustry.

A.Costefficiency

B.Switchingspeed

C.Thermalresistance

D.Alloftheabove

二、完形填空（共1题，每题10分）

说明：阅读下面的短文，根据内容填入合适的单