当a为负数时,-a表示().
当a为负数时,-a表示().
要正确,
要正确,
数学人气：240 ℃时间：2020-02-05 08:55:54
优质解答
··正数·可能你也这样想的,只是你不敢确定吧··
我来回答
类似推荐
猜你喜欢
- 1They find it important for them to do that if they want to get a good job
- 2"所有的细菌和真菌自己都不能合成有机物,只能利用现成的各种有机物作为营养'这句话对吗?为什么?那么蘑菇呢
- 3The number of people who have __to their own cars has risen sharply in recent years.
- 4They'll have a meeting next week[对划线部分提问]
- 5离子的物质的量怎么算阿的啊.
- 6连接两点的线段叫做两点之间的距离．_．
- 7用铜和金制成合金,已知金的密度是19.3*10^3kg/m^3,铜的密度为8.9*10^3kg/m^3,合金的密度可能是：
- 8在括号里填上适当的单位名称.一个长方形游泳池长40米,宽150分米,这个游泳池占地面积是600（ ）.
- 9of all the students,Jack,who always works hard and gets good marks in the examination,is(a)n( )student in his class.
- 10《中国少年报》和《儿童时报》这两种报纸我都爱看. 修改病句