394.排氣口之靜壓為下列何者?
(A)正壓
(B)負壓
(C)0
(D)可為正壓或負壓·
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統計: A(37), B(50), C(103), D(9), E(0) #2633907
統計: A(37), B(50), C(103), D(9), E(0) #2633907