1abc1abc5的精選

問題詳情：用計算器計算124×，按鍵的順序為（）A．12xy4×1ab/c1ab/c5=           B．124xy×1ab/c1ab/c5=C．12x24×1ab/c1ab/c5=               D．124x2×1ab/c1ab/c5=【回答】A【解析】由題意可得，124...