單項(xiàng)選擇題加空氣預(yù)熱器的傳熱效果應(yīng)該()

A.增強(qiáng)煙氣側(cè)的對(duì)流放熱系數(shù)或降低空氣側(cè)的對(duì)流放熱系數(shù)
B.降低煙氣側(cè)的對(duì)流放熱系數(shù)或增強(qiáng)空氣側(cè)的對(duì)流放熱系數(shù)
C.增強(qiáng)煙氣側(cè)和空氣側(cè)的對(duì)流放熱系數(shù)


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