11.abstractclassVehicle{publicintspeed（）{return0；}}12.classCarextendsVehicle{publicintspeed（）{return60；}}13.classRaceCarextendsCar{publicintspeed（）{return150；}}......21.RaceCarracer=newRaceCar（）；22.Carcar=newRaceCar（）；23.Vehiclevehicle=newRaceCar（）；24.System.out.println（racer.speed（）+，?+car.speed（）25.+，+vehicle.speed（））；Whatistheresult？（）A.0，0，0B.150，60，0C.Compilationfails.D.150，150，150E.Anexceptionisthrownatruntime.
11.abstractclassVehicle{publicintspeed（）{return0；}}12.classCarextendsVehicle{publicintspeed（）{return60；}}13.classRaceCarextendsCar{publicintspeed（）{return150；}}......21.RaceCarracer=newRaceCar（）；22.Carcar=newRaceCar（）；23.Vehiclevehicle=newRaceCar（）；24.System.out.println（racer.speed（）+，?+car.speed（）25.+，+vehicle.speed（））；Whatistheresult？（）
A.0，0，0
B.150，60，0
C.Compilationfails.
D.150，150，150
E.Anexceptionisthrownatruntime.
相关考题：
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Given:Whichfivemethods,insertedindependentlyatline5,willcompile?() A.protectedintblipvert（longx）{return0；}B.protectedlongblipvert（intx）{return0；}C.privateintblipvert（longx）{return0；}D.privateintblipvert（intx）{return0；}E.publicintblipvert（intx）{return0；}F.protectedlongblipvert（longx）{return0；}G.protectedlongblipvert（intx，inty）{return0；}
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