题干
—John, don't drive so fast． You may hit other's car．
— ______, Mum．
A：OK, I will
B：That's right
C：I won't run fast．
D：Don't worry, I won't
答案(点此获取答案解析）
D
(g)+3H
2NH
(g) △H < 0 ，可以提高氢气的转化率的措施是 （ ）