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【多选题】
压缩气体和液化气体除具有爆炸性外，有的还具有易燃性及（ ）。A.
助燃性
B.
毒害性
C.
窒息性
D.
腐蚀性
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【简答题】比较下列离去基团离去能力的大小: ( ) > ( ) > ( ) > ( ) 。 A RO- B ROO- C Cl- D NH2-
【简答题】在Python中5&8的运行结果是()
【单选题】听力原文： Camping can teach you many things, such as how to recognize plants and animals, to set up a tent, and to read a map. Most of all, you can anticipate understanding more about yourself and your pl...
A.
To learn to recognize plants and animals.
B.
To get to know more about yourself and your place in nature.
C.
To lean how to make use of a map to find your way in the open air.
D.
To learn how to survive in the wildness.
【单选题】听力原文： Camping can teach you many things, such as how to recognize plants and animals, to set up a tent and to read a map. Most of all, you can anticipate understanding more about yourself and your pla...
A.
To learn to recognize plants and animals.
B.
To set up a tent and learn how to cook by yourself.
C.
To get to know more about yourself and your place in nature.
D.
To learn how to make use of a map to find your way in the open air.
【简答题】阅读理解。 Plants are very important living things. Life can't go on living without plants.This is because plants can make food from air, water and sunlight. Animals get their food from plants, animals and...
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