问题
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共用题干第一篇TapeStore: A New Tape Storage Syst
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共用题干第一篇TapeStore: A New Tape Storage Syst
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共用题干第一篇TapeStore: A New Tape Storage Syst
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The most crucial problem any economic syst
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publicclassPet{privateStringname;publicPet(Stringname){this.name=name;}publicvoidspeak(){S
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publicclassPet{}publicclassCatextendsPet{}执行代码Catc=newCat();Petp=(Pet)c;下列哪项是正确的?