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【简答题】[ 互动探究 ] 将总体积为 10 mL 的 NO 与 O 2 混合,通入试管倒置在水槽中,反应停止后试管内剩余 2 mL 无色气体,求原气体中 NO 2 和 O 2 各多少毫升? [ 变式训练 1] 将 V mL NO 和 NO 2 的混合气体通过水吸收后,得到 a mL 无色气体 A 。将此无色气体 A 与等体积的 O 2 混合,通过水充分吸收后,得到 5 mL 无色气体 B ,试回答: (1...
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【单选题】Donna can make a chair for about $100, she charges customers $150 to buy the chair, and customers perceive that the chair is worth $225. In this case, the consumer surplus is:
A.
$50.
B.
$75.
C.
$125.
D.
$150.
E.
$225.
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【判断题】原子序数为 26 的铁原子的核外电子排布为 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2 。( )
A.
正确
B.
错误
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【简答题】同义句转换。 1. There is only a chair in the room. There is _____________ a chair in the room. 2. Mrs. Smith is busy. She is doing her housework now. Mrs. Smith is ______________ her housework now. 3. The t...
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【简答题】Your chair is your enemy. That is the conclusion of several recent studies. Among people who sit in front of the television for more than three hours each day, those who exercise are as fat as those w...
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【单选题】关于开式燃烧室的特点说明中，不正确的是（）
A.
多用于大中型柴油机
B.
起动性能较好
C.
必须使用多孔式喷油器
D.
排气中的碳烟及污染大气的有害成份少
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【简答题】大气式燃烧器的特点是什么?
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【简答题】When the right person is holding the right job at the right moment, that person's influence is greatly expanded. That is the position in which Janet Yellen, who is expected to be confirmed as the next...
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【简答题】汽车尾气(含有烃类、CO、SO 2 和NO等物质)是城市空气的污染源。治理的方法之一是在汽车的排气管上装一个“催化转换器”(用铂钯合金作催化剂)。它的特点是使CO和NO反应,生成可参与大气生态环境循环的无毒气体,并促使烃类充分燃烧及SO 2 的转化。 (1) 写出一氧化碳与一氧化氮反应的化学方程式 __________________________________________________...
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【简答题】Passage Three When the right person is holding the right job at the right moment, that person's influence is greatly expanded. That is the position in which Janet Yellen, who is expected to be confirm...
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相关题目：
【简答题】[ 互动探究 ] 将总体积为 10 mL 的 NO 与 O 2 混合,通入试管倒置在水槽中,反应停止后试管内剩余 2 mL 无色气体,求原气体中 NO 2 和 O 2 各多少毫升? [ 变式训练 1] 将 V mL NO 和 NO 2 的混合气体通过水吸收后,得到 a mL 无色气体 A 。将此无色气体 A 与等体积的 O 2 混合,通过水充分吸收后,得到 5 mL 无色气体 B ,试回答: (1...
查看完整题目与答案
【单选题】Donna can make a chair for about $100, she charges customers $150 to buy the chair, and customers perceive that the chair is worth $225. In this case, the consumer surplus is:
A.
$50.
B.
$75.
C.
$125.
D.
$150.
E.
$225.
查看完整题目与答案
【判断题】原子序数为 26 的铁原子的核外电子排布为 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2 。( )
A.
正确
B.
错误
查看完整题目与答案
【简答题】同义句转换。 1. There is only a chair in the room. There is _____________ a chair in the room. 2. Mrs. Smith is busy. She is doing her housework now. Mrs. Smith is ______________ her housework now. 3. The t...
查看完整题目与答案
【简答题】Your chair is your enemy. That is the conclusion of several recent studies. Among people who sit in front of the television for more than three hours each day, those who exercise are as fat as those w...
查看完整题目与答案
【单选题】关于开式燃烧室的特点说明中，不正确的是（）
A.
多用于大中型柴油机
B.
起动性能较好
C.
必须使用多孔式喷油器
D.
排气中的碳烟及污染大气的有害成份少
查看完整题目与答案
【简答题】大气式燃烧器的特点是什么?
查看完整题目与答案
【简答题】When the right person is holding the right job at the right moment, that person's influence is greatly expanded. That is the position in which Janet Yellen, who is expected to be confirmed as the next...
查看完整题目与答案
【简答题】汽车尾气(含有烃类、CO、SO 2 和NO等物质)是城市空气的污染源。治理的方法之一是在汽车的排气管上装一个“催化转换器”(用铂钯合金作催化剂)。它的特点是使CO和NO反应,生成可参与大气生态环境循环的无毒气体,并促使烃类充分燃烧及SO 2 的转化。 (1) 写出一氧化碳与一氧化氮反应的化学方程式 __________________________________________________...
查看完整题目与答案
【简答题】Passage Three When the right person is holding the right job at the right moment, that person's influence is greatly expanded. That is the position in which Janet Yellen, who is expected to be confirm...
查看完整题目与答案