凝聚过程要求对水进行快速搅拌,此时因生成的矾花颗粒尺度很小,颗粒间的碰撞主要为()。 发布时间:2020-12-09 02:11 │ 来源:www.tikuol.com 题型:单项选择题 问题: 凝聚过程要求对水进行快速搅拌,此时因生成的矾花颗粒尺度很小,颗粒间的碰撞主要为()。A.异向碰撞B.同向碰撞C.重力碰撞D.水力碰撞
题型:单项选择题 -Did you see the hit New Year's movie-If You are The One(非诚勿扰)last night!-Yes, But when I got the movie theater, the film________ for ten minutes.[ ]A. had begun B. had been onC. had started D. begun 查看答案
题型:单项选择题 The potato is not a fruit, but ________. [ ]A. a vegetable B. vegetable C. vegetables D. piece of vegetable 查看答案