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人类生活中不可缺少的物质。 （1）净水时，通常用 14 的方法，除去水中难溶性杂质，常用 15 做吸附剂除去水中的色素和异味。 （2）同学设计了电解水简易装置，其中A、B电极由金属曲别针制成。通电后的现象如图所示。与A电极相连的试管中收集到的气体是 16 ；电解水的化学方程式为： 17 。 （3）自来水中含有少量Ca(HCO 3 ) 2 等可溶性化合物，烧水时Ca(HCO 3 ) 2 发生分解反应，生成难溶性的碳酸钙、二氧化碳，这就是壶中出现水垢的原因之一。Ca(HCO 3 ) 2 受热分解的化学方程式为： 18 。
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A.
Hue/Saturation
B.
Color Blance
C.
Change Color
D.
Leave Color
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【单选题】She promised to come and help us, and _______________.
A.
so did she
B.
so she did
C.
so she would
D.
so would she
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【单选题】Come and sit down by the fire、 Your hand( )( )( ).
A.
feel so coldly
B.
is feeling so cold
C.
feels so cold
D.
is felt so cold
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【单选题】So how has this _________and does it matter?
A.
come about
B.
come out
C.
come in
D.
come across
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【多选题】下列哪个滤镜可以将影片中选择的颜色保持，将其他颜色转换为灰度显示？
A.
Hue/Saturation
B.
Leave Color
C.
Change Color
D.
Color Blance
查看完整题目与答案
【单选题】How did it______that you spent so much money in a week?
A.
come out
B.
come about
C.
come across
D.
come to
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【单选题】How did it ____ that humans speak so many different languages? [     ]
A.
come out
B.
come off
C.
come about
D.
come round
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【单选题】How did it _______ that he was hurt so seriously? [     ]
A.
come up
B.
come across
C.
come about
D.
come
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【单选题】Tony often with his wife about money.
A.
argues
B.
interviews
C.
embarrasses
D.
improves
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【判断题】税务稽查包括例行检查、税务评估、专项检查和其他举报检查。
A.
正确
B.
错误
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相关题目：
【多选题】下列哪个滤镜可以将影片中选择的颜色保持,将其他颜色转换为灰度显示?
A.
Hue/Saturation
B.
Color Blance
C.
Change Color
D.
Leave Color
查看完整题目与答案
【单选题】She promised to come and help us, and _______________.
A.
so did she
B.
so she did
C.
so she would
D.
so would she
查看完整题目与答案
【单选题】Come and sit down by the fire、 Your hand( )( )( ).
A.
feel so coldly
B.
is feeling so cold
C.
feels so cold
D.
is felt so cold
查看完整题目与答案
【单选题】So how has this _________and does it matter?
A.
come about
B.
come out
C.
come in
D.
come across
查看完整题目与答案
【多选题】下列哪个滤镜可以将影片中选择的颜色保持，将其他颜色转换为灰度显示？
A.
Hue/Saturation
B.
Leave Color
C.
Change Color
D.
Color Blance
查看完整题目与答案
【单选题】How did it______that you spent so much money in a week?
A.
come out
B.
come about
C.
come across
D.
come to
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【单选题】How did it ____ that humans speak so many different languages? [     ]
A.
come out
B.
come off
C.
come about
D.
come round
查看完整题目与答案
【单选题】How did it _______ that he was hurt so seriously? [     ]
A.
come up
B.
come across
C.
come about
D.
come
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【单选题】Tony often with his wife about money.
A.
argues
B.
interviews
C.
embarrasses
D.
improves
查看完整题目与答案
【判断题】税务稽查包括例行检查、税务评估、专项检查和其他举报检查。
A.
正确
B.
错误
查看完整题目与答案
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