若e^(u+v)=uv，求dvdu-推荐一款摄像机
编辑： admin 2017-20-02
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4
人体内的水分,大约占到体重的60%-70%
所以选B
1993年1月18日,第四十七届联合国大会作出决议,确定每年的3月22日为“世界水日”.
1994年开始,把"中国水周"的时间改为每年的3月22日至28日,时间的重合,使宣传活动更加突出"世界水日"的主题.
所以选A
提示：
1.人体内的液体,大约占到体重的85% 。
2.“世界水周”3月22日 1992年12月22日，联合国大会的47/193号决议设立了世界水日。这是提醒公众重视水资源问题的一个特殊的日子。
类似问题
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1.what is Nemo?
Nemo is a fish.
2.whom does Nemo live with?
Nemo lives with his father.
3.where is put after he is stolen from his coral reef home?
Nemo is put in a fish tank in a dentist's office in Sydney,Australiaafter he is stolen from his coral reef home.
4.How is Nemo's father then?
His father was very worried.
5.Is Dory Nemo's mother?
No,it isn't.
6.How is Dory?
Dory is kind but very forgetful.
7.Who meet many interesting events on their journey to rescue Nemo?
Marlin and Dory met many interesting events on their journey to rescue Nemo
8.Marlin finds himself to be a hero,doesn't he?
Yes,he does.
希望能够帮到楼主
9.What does Dory help Marlin?
10.Does Nemo get back home safely at last?
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2√12+3√48
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