class Wrench2 { int size; public static void main(String [] args) { Wrench2 w = new Wrench2(); w.size = 9; Wrench2 w2 = go(w, w.size); System.out.print(w2.size); } static Wrench2 go(Wrench2 wr, int s) { s = 7; return wr; } } 结果为:()
- A、7
- B、9
- C、编译失败
- D、输出结果不可预料
正确答案:B
答案解析:有

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