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【单选题】
在两个恒容的密闭容器中进行下列两个可逆反应: 甲: C(s) + H 2 O(g) CO(g) + H 2 (g) 乙: CO(g) + H 2 O(g) CO 2 (g) + H 2 (g) 现有下列状态: 1 混合气体平均相对分子质量不再改变 2 恒温时,气体压强不再改变 3 各气体组成浓度相等 4 反应体系中温度保持不变 5 断裂氢氧键速率是断裂氢氢键速率的 2 倍 6 混合气体密度不变 7 单位时间内,消耗水蒸气质量与生成氢气质量比为 9 ∶ 1 其中能表明甲、乙容器中反应都达到平衡状态的是 ( )A.
①②⑤
B.
③④⑥
C.
⑥⑦
D.
④⑤
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举一反三
【单选题】切片时组织过硬,变脆的原因是
A.
组织脱水、透明和浸蜡过度
B.
固定失时或固定不当
C.
陈旧、腐败或干枯的组织
D.
组织脱水、透明和浸蜡不足
E.
切片刀不锋利,固定不牢
【单选题】切片时组织过硬、变脆的原因是
A.
组织脱水、透明和浸蜡过度
B.
固定失时或固定不当
C.
陈旧、腐败或干枯
D.
组织脱水、透明、浸蜡不足
E.
切片刀不锋利,固定不牢
【单选题】Coronation Street is a British soap opera set in Weatherfield, a fictional town in Greater Manchester, a city in Britain. It was sold as a kitchen sink drama serial about the domestic lives of the wor...
A.
In Weatherfield.
B.
In Erinsborough.
C.
In Manchester.
D.
In an English city
【简答题】齿轮泵常在 MP以下低压系统中应用,叶片泵常在 MP以下的中压系统中应用,柱塞泵常在 MP以上高压系统中应用。
【简答题】The North Street is ____street in this city.
【简答题】Coronation Street is a British soap opera set in Weatherfield, a fictional town in Greater Manchester, a city in Britain. It was sold as a kitchen sink drama serial about the domestic lives of the wor...
【简答题】Section 3: Directions: In this part, you will read 5 English sentences and 5 Chinese sentences. Translate them into Chinese or English respectively. 1. The building is bordered by West Street to the w...
【单选题】Soaps on TVCoronation Street is a British soap opera set in Weatherfield, a fictional town in Greater Manchester, a city in Britain. It was sold as a kitchen sink drama serial about the domestic lives...
A.
Neighbors, it was shown in Britain in 1980.
B.
Coronation Street, it is about the working class in the north of England.
C.
Coronation Street, it has been on TV for more than 50 years.
D.
Coronation Street, it is shown three times a week.
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