【单选题】【消耗次数：1】
COPD发生最重要的危险因素是
①
吸烟
②
职业粉尘
③
大气污染
④
气温突变
⑤
免疫功能紊乱
参考答案：
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治理大气污染的对策包括（）
①
A落实减排目标，严格控制重点行业、重点区域污染物排放总量
②
B依靠科技进步，淘汰落后生产工艺和提高能源效率
③
C构筑大气污染治理法律法规防线
④
D完善管理机制，形成大气污染治理齐抓共管的局面
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大气污染控制系统包括（）。
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A.污染源、污染源控制措施、污染物在大气中的行为、空气污染的影响、法规和标准措施
②
B.集气罩、风管、净化器、风机、烟囱
③
C.污染源控制措施、污染物在大气中的行为、空气污染的影响
④
D.污染源、污染源控制措施、污染物在大气中的行为、空气污染的影响
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consider
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think
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choose
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elect
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Why not to call on
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Why don’t call on
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someone
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no one
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anyone
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clothes
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clothings
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cloth
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clothing
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to
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in
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for
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with
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keep
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an advice
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some advice
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to
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in
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for
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with
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①
under
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on