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(2020, 宁德质检节选 ) 甲醇 (CH 3 OH) 可用于制造燃料电池。科学家利用 CO 2 与水分解产生的 H 2 在一定条件下合成甲醇。受实际反应条件的影响,合成装置中可能含有二氧化碳与一氧化碳。 【查阅资料】一氧化碳能使湿润黄色氯化钯试纸变成蓝色。 某同学设计如右图装置,抽取合成装置中的混合气体进行证明,若含有 CO 则 A 中的现象是 ,为证明含有 CO 2 则 B 中的试剂为 。
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参考答案：
举一反三
【单选题】The child's earliest words deal with concrete objects and actions, it is much later that he is able to grapple with ______.
A.
decisions
B.
abstractions
C.
opponents
D.
mathematics
查看完整题目与答案
【单选题】Which of the following words or phrases is most concrete?
A.
Cottage.
B.
Residence.
C.
Dwelling.
D.
Habitation.
查看完整题目与答案
【多选题】以下哪种产品质量特性是可以直接定性、定量的？
A.
强度
B.
厚度
C.
高度
D.
舒适
E.
美观
F.
色彩
查看完整题目与答案
【单选题】Which statement is NOT correct about concrete words?
A.
Concrete words refer to tangible objects—people, places, and things.
B.
none of the above
C.
Concrete words are words that you can see, feel, hear, smell, touch and taste.
D.
“Honesty,” “pride,” and “patriotism” are concrete words.
查看完整题目与答案
【简答题】歌唱的呼吸法一般有___、___、___，其中最科学最常用的呼吸方法是_______________。
查看完整题目与答案
【单选题】Which statement is NOT correct about concrete words?
A.
Concrete words are words that you can see, feel, hear, smell, touch and taste.
B.
“ Honesty, ” “pride , ” and “patriotism” are concrete words.
C.
C oncrete words refer to tangible objects—people, places, and things.
查看完整题目与答案
【单选题】The child's earliest words deal with concrete objects and actions, it is much later that he is able to grasp ______ .
A.
decisions
B.
abstractions
C.
opponents
D.
mathematics
查看完整题目与答案
【单选题】Which statement is NOT correct about concrete words?
A.
none of the above
B.
Concrete words are words that you can see, feel, hear, smell, touch and taste.
C.
“Honesty,” “pride,” and “patriotism” are concrete words.
D.
Concrete words refer to tangible objects—people, places, and things.
查看完整题目与答案
【单选题】歌唱中()呼吸方法最科学?
A.
胸式呼吸
B.
腹式呼吸
C.
自然呼吸
D.
胸腹式呼吸
查看完整题目与答案
【简答题】道路交通系统的四个基本要素: 、 、 、 。
查看完整题目与答案
相关题目：
【单选题】The child's earliest words deal with concrete objects and actions, it is much later that he is able to grapple with ______.
A.
decisions
B.
abstractions
C.
opponents
D.
mathematics
查看完整题目与答案
【单选题】Which of the following words or phrases is most concrete?
A.
Cottage.
B.
Residence.
C.
Dwelling.
D.
Habitation.
查看完整题目与答案
【多选题】以下哪种产品质量特性是可以直接定性、定量的？
A.
强度
B.
厚度
C.
高度
D.
舒适
E.
美观
F.
色彩
查看完整题目与答案
【单选题】Which statement is NOT correct about concrete words?
A.
Concrete words refer to tangible objects—people, places, and things.
B.
none of the above
C.
Concrete words are words that you can see, feel, hear, smell, touch and taste.
D.
“Honesty,” “pride,” and “patriotism” are concrete words.
查看完整题目与答案
【简答题】歌唱的呼吸法一般有___、___、___，其中最科学最常用的呼吸方法是_______________。
查看完整题目与答案
【单选题】Which statement is NOT correct about concrete words?
A.
Concrete words are words that you can see, feel, hear, smell, touch and taste.
B.
“ Honesty, ” “pride , ” and “patriotism” are concrete words.
C.
C oncrete words refer to tangible objects—people, places, and things.
查看完整题目与答案
【单选题】The child's earliest words deal with concrete objects and actions, it is much later that he is able to grasp ______ .
A.
decisions
B.
abstractions
C.
opponents
D.
mathematics
查看完整题目与答案
【单选题】Which statement is NOT correct about concrete words?
A.
none of the above
B.
Concrete words are words that you can see, feel, hear, smell, touch and taste.
C.
“Honesty,” “pride,” and “patriotism” are concrete words.
D.
Concrete words refer to tangible objects—people, places, and things.
查看完整题目与答案
【单选题】歌唱中()呼吸方法最科学?
A.
胸式呼吸
B.
腹式呼吸
C.
自然呼吸
D.
胸腹式呼吸
查看完整题目与答案
【简答题】道路交通系统的四个基本要素: 、 、 、 。
查看完整题目与答案
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