在一定条件下,1体积气体A2和3体积B2完全反应生成了2体积气体X(体积在相同条 发布时间:2017-05-24 23:53 │ 来源:www.tikuol.com 题型:选择题 问题: 在一定条件下,1体积气体A2和3体积B2完全反应生成了2体积气体X(体积在相同条件下测定),则X的化学式是A.ABB.A2B2C.AB2D.AB3
题型:选择题 改错。( ) 1. What do he see? _____________ A B C D ( ) 2. Danny is pointing on the little red school. _____________ A B C D( ) 3. She is read a book now. _____________ A B C D( ) 4. He's father is a man. _____________ A B C D ( ) 5. Now Jenny and Danny can drinking their tea. _____________ A B C D 查看答案