【单选题】在合成氨的反应中:N (g)+3H (g) 2NH (g) △H < 0 ,可以提高氢气的转化率的措施是 ( )
【多选题】植物细胞培养容器中的气体成分主要指( )。
【简答题】如果我们把所有精力和努力都投入进去,再过几个月,我们肯定能完成这个项目。(accomplish)
【单选题】Like the theory of evolution, the big-bang model of the universe's formation has undergone modification and ______, but it has______ all serious challenges.
A.
alteration...confirmed
C.
transformation...ignored
D.
evaluation...acknowledged
E.
refutation...misdirected