one hose puts out water and another takes in water?

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/12 19:41:05
one hose puts out water and another takes in water?

one hose puts out water and another takes in water?
one hose puts out water and another takes in water?

one hose puts out water and another takes in water?
一个水管出水,一个水管收水