下述哪项不是ARDS直接肺损伤因素
A．感染中毒症
B．重症肺炎
C．淹溺
D．肺挫伤
E．吸入毒气
参考答案：A
It's no use ______ without taking any action. [ ]
A. to complain
B. complaining
C. being complained
D. to be complained
下列属于输导组织的是（ ）
A．
B．
C．
D．
