浮点数的表示分为阶和尾数两部分。两个浮点数相加时，需要先对阶，即（ ）（n为阶差的绝对值）。
- A.将大阶向小阶对齐，同时将尾数左移n位
- B.将大阶向小阶对齐，同时将尾数右移n位
- C.将小阶向大阶对齐，同时将尾数左移n位
- D.将小阶向大阶对齐，同时将尾数右移n位
正确答案及解析
正确答案
解析
对阶时，小数向大数看齐；对阶是通过较小数的尾数右移实现的。
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