A.露點(diǎn)與氣溫的差值越大,空氣越干燥 B.露點(diǎn)溫度與氣溫?zé)o關(guān) C.露點(diǎn)溫度與氣壓有關(guān) D.露點(diǎn)與空氣中含有水汽的絕對(duì)量無(wú)關(guān)