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【单选题】
(知识点:标准摩尔生成焓定义,转折温度的计算)已知25°C时,NH 3 (g)的 =-46.19KJ·mol -1 ,反应N 2 (g)+3H 2 (g)→2NH 3 (g)的 =-198 J·mol -1 ·K -1 ,欲使该反应在标准状态时能自发进行,所需的温度条件A.
<193℃
B.
<193K
C.
>193K
D.
>193℃
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【单选题】After-school Program The after-school programs will continue this year. The program will be open from 3;30 a.m. to 6:00 p.m. every day. 3:30 - 4:30 : Homework& Reading 4:30 - 6:00: Activities If you h...
A.
at 7:00 p.m.
B.
to do some reading
C.
to have dinner
D.
to do some activities at 3:00 p.m.
【简答题】input标签可以在表单中定义输入控件，该标签的______属性定义输入控件的类型。（小写表示）
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【单选题】Tom pointed out that the living standard of urban and______people continued to improve.
A.
remote
B.
municipal
C.
rural
D.
provincial
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