A.實(shí)參 B.形參 C.傳參 D.值參
A.publicabstractvoidLook(){} B.publicabstractvoidLook() C.publicvirtualvoidEat() D.publicvirtualvoidEat(){}
A.int Test(){return"0";} B.void Test(){return"0";} C.void Test(){returnnull;} D.void Test(){return;}