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【多选题】
下列哪些物质可以用于基准物质( )A.
盐酸
B.
氢氧化钠
C.
草酸
D.
邻苯二甲酸氢钾
E.
无水碳酸钠
F.
碳酸钙
G.
单质
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举一反三
【单选题】What can be inferred from the fourth paragraph?
A.
Farm areas accept waste from the city in modern society.
B.
There is cheap land to bury waste in modem society.
C.
It is difficult to find space to bury waste in modem society.
D.
Ways to deal with waste in modem society is similar to that of the past.
【单选题】The river was so ______ with waste from the chemical plant that people can not swim in it.
A.
contained
B.
terminated
C.
intimidated
D.
contaminated
【单选题】What can be inferred from the fourth paragraph?
A.
Farm areas accept waste from the city in modern society.
B.
There is cheap land to bury waste in modern society.
C.
It is difficult to find space to bury waste in modern society.
D.
Ways to deal with waste in modern society stay the same.
【简答题】直接凝集反应试管法主要用于检测
【简答题】What can be inferred from the fourth paragraph? [A] Farm areas accept waste from the city in modem society. [B] There is cheap land to bury waste in modem society. [C] It is difficult to find space to...
【单选题】Biodiesel can be made from coconut and palm oil, or from waste cooking oil.
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】有关的技术分析著作常将缺口划分为??、??、持续性缺口和消耗性缺口四种形态。
【单选题】What can be inferred from the fourth paragraph?
A.
Farm areas accept waste from the city in modem society.
B.
There is cheap land to bury waste in modem society.
C.
It is difficult to find space to bury waste in modem society.
D.
Ways to deal with waste in modem society stay the same.
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