胶质的H/C原子比同沥青质相比是()。 A.高 B.低 C.稍低 D.相等 发布时间:2018-11-05 08:35 │ 来源:www.tikuol.com 题型:单项选择题 问题: 胶质的H/C原子比同沥青质相比是()。A.高B.低C.稍低D.相等
题型:单项选择题 The news that a jet __________ Russian mountains killing 88 was one of the worst things I have known in the past five years.[ ]A. crashed down B. crashed intoC. met with D. came across 查看答案