How long does it take the Earth to rotate on its own axis on How long does it take the Earth to rotate on its own axis once? 分类:公共英语五级 题型:填空题 查看答案
在一个锥体中,作平行于底面的截面,若这个截面与底面面积之比为l:3,则锥体被截面所分成的两部分的体积之比为 ( ) 在一个锥体中,作平行于底面的截面,若这个截面与底面面积之比为l:3,则锥体被截面所分成的两部分的体积之比为 ( ) 分类:公共英语五级 题型:填空题 查看答案
What is the main topic of this talk? What is the main topic of this talk? A.Bicycles and cars. B.Building codes. C.En 分类:公共英语五级 题型:填空题 查看答案