A room is filled with saturated moist air at 20 °C and a total pressure of 90 kPa. If the mass of dry air in the room is 100 kg, the mass of water vapor is
A、1.52kg;
B、2.60kg;
C、1.62kg;
D、1.66kg
发布时间：2025-07-21 20:17:00
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