问题
选择题
Sandy looked ______ in a ______ hairstyle. [ ]
A. greatly, 1990's
B. great, 1990s'
C. greatly, 1990s
D. great, 1990s
答案
答案：D
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Sandy looked ______ in a ______ hairstyle. [ ]
A. greatly, 1990's
B. great, 1990s'
C. greatly, 1990s
D. great, 1990s
答案：D
，某温度下的平衡常数为400。此温度下，在1 L的密闭容器中加人CH3OH,反应到某时刻测得各组分的物质的量浓度如下：