A digital computer is a system composed of four distinct elements: a central processing unit，input devices, memory storage devices, and_______devices.A. hard wareB. hard diskC. outputD. monitor
A digital computer is a system composed of four distinct elements: a central processing unit，input devices, memory storage devices, and_______devices.
A. hard ware
B. hard disk
C. output
D. monitor
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String[] elements={for,tea,too};String first=(elements.length0)?elements[0]null;What is the result?() A.Compilation fails.B.An exception is thrown at runtime.C.The variable first is set to null.D.The variable first is set to elements[0].
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11.classA{12.publicvoidprocess（）{System.out.print（”A）；}}13.classBextendsA{14.publicvoidprocess（）throwsRuntimeException{15.super.process（）；16.if（true）thrownewRuntimeException（）；17.System.out.print（B”）；}}18.publicstaticvoidmain（String[]args）{19.try{（（A）newB（））.process（）；}20.catch（Exceptione）{System.out.print（”Exception）；}21.}Whatistheresult？（）A.ExceptionB.AExceptionC.AExceptionBD.ABExceptionE.Compilationfailsbecauseofanerrorinline14.F.Compilationfailsbecauseofanerrorinline19.
11.classa{12.publicvoidprocess（）{System.out.print（”a，”）；}}13.classbextendsa{14.publicvoidprocess（）throwsIOException{15.super.process（）；16.System.out.print（”b，”）；17.thrownewIOException（）；18.}}19.publicstaticvoidmain（String[]args）{20.try{newb（）.process（）；}21.catch（IOExceptione）{System.out.println（”Exception”）；}}Whatistheresult？（）A.ExceptionB.a，b，ExceptionC.Compilationfailsbecauseofanerrorinline20.D.Compilationfailsbecauseofanerrorinline14.E.ANullPointerExceptionisthrownatruntime.
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