能腻膈碍胃的味是()
A.辛
B.酸
C.甘
D.苦
E.淡
参考答案:C
The student _____ from the training so much that he was _____ the first prize in the event.
[ ]
A. benefited;benefited
B. awarded;awarded
C. awarded;benefited
D. benefited;awarded
现向一密闭容器中充入1 mol N2和 3 mol H2,在一定条件下开始反应。下列有关说法中正确的是( )
A.达到化学平衡时,将生成2 mol NH3
B.达到化学平衡时,N2、H2和NH3的物质的量浓度一定相等
C.达到化学平衡时,N2、H2和NH3的物质的量浓度不再变化
D.达到化学平衡时,正反应和逆反应的速率都为零