GRE机经题库
>
>
选择题
>
NO.1574
中等
00:00
本题平均耗时:3分01秒
|
正确率:71%

Earth makes a complete revolution around the Sun once per year in a nearly circular orbit that has a radius of about 93×106 miles. Of the following, which is closest to the distance, in miles, that Earth travels in that orbit in one year?

6×93×106

3×93×106

2×93×106

\(\frac {1} {2}\)×93×106

 

\(\frac {1} {3}\)×93×106

Select one answer choice.

做题笔记
题目讨论