简述水孔填塞物与炸药相混的原因及预防措施?
参考答案:
原因:炸药沉降慢,填塞岩石沉降快。
预防措施:填塞前将填塞物装入袋内,填入孔中然后再行填塞(口袋直径小于孔径)。
The nurse is caring for a client with otosclerosis scheduled to undergo a stapedectomy. The client asks the nurse when her hearing will improve. Which response by the nurse is most appropriate
A. Your hearing may not improve but you’ll no longer be bothered by tinnitus.B. Your hearing may be dramatically improved right after surgery.C. You may notice improved hearing within 1 to 2 weeks.D. Your hearing may improve 3 to 6 weeks after surgery.
下列药物在处方中未注明生熟品时一般需应付熟品的是()
A.甘草
B.柴胡
C.乳香
D.石膏
E.麻黄