()以上医院应设置独立的输血科(血库),负责临床用血的技术指导和技术实施,确保贮血.配血和其他科学.合理用血措施的执行。
参考答案:二级
The time he has devoted in the past years _______ the disabled is now considered ________ of great value.
A.to help; being
B.to helping; to be
C.to help; to be
D.to helping; being
热风炉烟气引风机突然停机?如何处理?