【空調版】毎日一問20180507
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空気清浄度で制御すべき対象は（）です。A、空気中の最大制御粒子径 B、空気中の粒子数 C、空気中の最小制御粒子径と粒子数 D、空気中の最小制御粒子径 答え：B
B、空気中の微粒子数
C、空気中の最小制御粒子径と粒子数
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