2025年学术英语理工第二版王健燕答案.pdfVIP

穷则独善其身，达则兼善天下。——《孟子》

学术英语理工第二版王健燕答案

1.Itisconventionaltotakethecurrentflowasthemovementof.（）[单选题]

A.negativecharges

B.positivecharges(正确答案)

C.anycharge

D.protons

2.Electriccurrentisthetimerateofcharge,measuredin.（）[单选题]

A.watts

B.volts

C.joules

D.amperes(正确答案)

3.Theenergyrequiredtomoveaunitchargethroughanelementis.（）[单选题]

A.current

B.power

C.voltage(正确答案)

D.potential

4.Theplus(+)andminus(-)signsinanelectriccircuitdiagramareusedtodefine.（）

[单选题]

A.voltagepolarity(正确答案)

老当益壮，宁移白首之心；穷且益坚，不坠青云之志。——唐·王勃

B.currentdirection

C.powerflow

D.absorbedpower

5.Accordingtothepassivesignconvention,ifthepowerhasaplussign,poweris()

bytheelement.()[单选题]

A.supplied

Babsorbed(正确答案)

C.generated

D.transferred

6.Anindependentvoltagesourceisa(),whichmaintainsaspecifiedvoltage

betweenitsterminals.（）[单选题]

A.one-terminalelement

B.two-terminalelement(正确答案)

C.three-terminalelement

D.four-terminalelement

7.Resistorsare()elements.（）[单选题]

A.passive(正确答案)

B.active

C.independentsource

D.dependentsource

8.Anidealdependentsourceisan()elementinwhichthesourcequantityis

controlledbyanothervoltageorcurrent.（）[单选题]

去留无意，闲看庭前花开花落；宠辱不惊，漫随天外云卷云舒。——《幽窗小记》

A.passive

B.active(正确答案)

C.independent

D.inductive