题干
Our government has tried many ways to the smog(雾霾)problem. Maybe we'll have a clear sky in the near future.
A：put away
B：work out
C：come up
答案(点此获取答案解析）
B
Our government has tried many ways to the smog(雾霾)problem. Maybe we'll have a clear sky in the near future.
A：put away
B：work out
C：come up
xC(g)达到平衡后，甲容器中A的浓度与乙容器中A的浓度之比为5：3，则达到平衡时甲与乙中C的体积分数为