将不饱和湿空气在总压和湿度不变的条件下冷却,当温度达到()时,空气中的水汽开始凝结成露滴。
A、干球温度
B、湿球温度
C、露点
D、绝热饱和温度
参考答案:C
– Mum, I’ve been studying English since 8 o’clock. _____ I go out and play with Tom for a while?
– No, I’m afraid not. Besides, it’s raining outside now.
A. Can’t B. May not C. Won't
诊断急性阑尾炎,有意义的体征是()
A.脐周有无压痛
B.Murphy征是否阳性
C.McBurney点是否压痛
D.肠鸣音是否改变
E.季肋点有无压痛