在高原、高空环境下,只要吸入气PO2大于60mmHg,Hb氧饱和度仍可达
A.60%~70%B.0%~80%C.780%~90%D.90%以上
参考答案:D
肯定属湿热类温病的病种是()
Have you found some information about that writer ______ you can use in your article.
A.who
B.whom
C.what
D.which