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题目内容双击单词支持查询和收藏哦～
The speed of light is $$3·10^{8}$$ meters per second, rounded to the nearest $$10^{8}$$ meters per second. A "light-hour" is the distance that light travels in an hour.
Quantity A
The number of kilometers in a light-hour
Quantity B
$$10^{10}$$
B显示答案
· 相关考点
2.5.1 单位换算
2.5.1 单位换算
以上解析由 考满分老师提供。
