题目

在一定温度下,可逆反应A(g)+3B(g) 2C(g)达到平衡的标志是(   ) A.单位时间内生成nmolA的同时生成3nmol的B  B. C的生成速率与C的分解速率相等 C. A，B，C三种物质的浓度相等 D. A，B，C的物质的量之比为1:3:2 答案：BMrs. Smith found the toys here and there, so she asked her son to ______ his toys before having dinnerA．put offB．give awayC．put awayD．give out