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已知数列{an}满足a1=1 an+1=2an+1(n∈N*)
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甲醛,气体,的是
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When one looks back upon the fifteen hundred years
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Smoking, which may be a pleasure for some
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已知数列{an}满足a1=1 an+1=2an+1(n∈N*)
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题目家用冰箱中,可用来除臭剂的是[ ]A.活性炭B.石灰水C.酒精D.食盐可圈可点用户2021-03-18 14:05优质解答答案A知识点室内空气污染的定义室内空气污染物:CO、CO2、NO2、NO、SO2、尼古丁;甲醛、苯、二甲苯
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题目
家用冰箱中,可用来除臭剂的是
[ ]
A.活性炭
B.石灰水
C.酒精
D.食盐
可圈可点用户
2021-03-18 14:05
优质解答
A
室内空气污染的定义
室内空气污染物:
CO、CO2、NO2、NO、SO2、尼古丁;甲醛、苯、二甲苯、氡CO:与血红蛋白易结合难分离而缺氧,结合能力是O2的200-300倍
甲醛HCHO:有刺激性气味气体,过敏性皮炎、免疫异常、中枢神经、致癌
氡Rn:无色无味放射性气体,存在岩石、土壤、石材中,可导致肺癌,隐性杀手
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