预防大量快速输血引起的出血反应,可采用
A.碱化尿液B.换血治疗C.每输库存血3~5U,应补充鲜血1UD.加热库存血E.地塞米松5mg静脉注射治疗
参考答案:C
为了防止干粉灭火器的堵管现象,使用时先将干粉灭火器()。
A.上、下颠倒数次
B.直接使用
C.不能用
How did it ______ that the plane had run out of fuel half way? [ ]
A. come about
B. come across
C. come over
D. come out