抢救溺水病人的首要步骤是
A.清除呼吸道分泌物B.口对口人工呼吸C.加压给氧D.应用呼吸兴奋剂E.心脏按压
参考答案:A
I will tell him to call you as soon as he back.
A.come
B.comes
C.came
D.coming
简述急性脓胸的治疗原则。