Given: 
Which two methods, inserted independently at line 17, correctly complete the Sales class?（）
- A、double getSalesAmount() { return 1230.45; }
- B、public double getSalesAmount() { return 1230.45; }
- C、private double getSalesAmount() { return 1230.45; }
- D、protected double getSalesAmount() { return 1230.45; }
正确答案:B,D
答案解析:有
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