问题
选择题
your teacher sports? |
A. Does; likes B. Is; like C. Do; likes D. Does; like |
答案
答案:D
your teacher sports? |
A. Does; likes B. Is; like C. Do; likes D. Does; like |
答案:D
在一有催化剂的隔热密闭容器中,充入6molN2和6mol H2,并使之进行反应: N2+3H2
2NH3(放热反应),下列情况不能表明反应达到了平衡的是
A.N2的体积分数保持不变时 | |
B.H2的体积分数保持不变时 | C.NH3的体积分数保持不变时 |
D.温度保持不变时 |