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【題目】污染指數(shù)指的是綜合表示進料中懸浮物和膠體物質的濃度和過濾特性,表征進料對微孔濾膜堵塞程度的一個指標。按照國家統(tǒng)一規(guī)定,空氣質量達到優(yōu)良標準即達到國家質量二級標準是指空氣污染指數(shù)小于等于100?諝馕廴局笖(shù)大于50且小于等于100時,說明空氣質量為良好。如果空氣污染指數(shù)小于等于50,說明空氣質量為優(yōu)。

下面關于空氣污染指數(shù)的敘述中錯誤的是

A. 污染指數(shù)大,空氣清新,對人體健康有利

B. 污染指數(shù)大,空氣污濁,對人體健康有害

C. 污染指數(shù)越小,空氣質量狀況越優(yōu)

D. 污染指數(shù)越大,空氣污染越嚴重

【答案】A

【解析】

按照國家統(tǒng)一規(guī)定,污染指數(shù)越小,空氣質量狀況越優(yōu);污染指數(shù)越大,空氣污染越嚴重。所以A的說法是錯誤的,故A符合題意。

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