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单项选择题
复相反应中,平衡常数的表达式中并没有出现凝聚相的分压或浓度,因此,计算此类反应的
只需考虑参与反应的气相物质。
A、正确
B、错误
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Recently a large medicine factory set up by the U. S. Investors declared that it will stop giving 'kickbacks' to doctors as the factory has spent too much to promote sales over the years.
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At a certain pancake festival with 600 attendees in which every attendee ate at least 1 pancake, how many people had only 1 pancake?
(1) At the festival there were 1,200 pancakes served, and no person had more than 3 pancakes.
(2) Seventy-two percent of the attendees at the festival had 2 or more pancakes.
单项选择题
新鲜米糠适口性好,但不宜长期贮存,其原因是下列哪种物质含量高()。 A.
粗纤维 B.
不饱和脂肪酸 C.
微量元素 D.
水
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