题干
It’s said that there are plenty of hotels in Wuyishan. There_______be any difficulty for you to find somewhere to stay.
A：shouldn’t
B：mustn’t
C：wouldn’t
D：needn’t
答案(点此获取答案解析）
A
CO(g)＋H2(g)在一可变容积的密闭容器中进行，下列条件的改变对其反应速率几乎无影响的是( )