题型:单项选择题 甲肝和戊肝病人的排泄物和呕吐物的消毒处理是()。A.每1000ml加20000mg/L含氯消毒剂溶液2000ml搅匀放置2小时B.用煮沸消毒15min~30minC.用环氧乙烷气体熏蒸D.用煮沸消毒5min~10minE.用1000mg/L~2000mg/L含氯消毒剂溶液浸泡、喷洒或擦洗消毒 查看答案
题型:选择题 选择填空。My friend, Nancy, ______. [ ]A. needs some helps B. don't need any help C. doesn't need any help D. need some help 查看答案