第7题: [单项选择]75%乙醇术前浸泡手臂消毒需要多长时间() A. 5分钟 B. 10分钟 C. 20分钟 D. 30分钟 E. 60分钟 参考答案:A 答案解析:金属器械消毒可用75%乙醇浸泡30分钟或擦拭;外科洗手消毒,用75%的乙醇溶液浸泡5分钟。故第1题选D。第2题选A。解题关键:75%乙醇的消毒时间:金属器械---30分钟,泡手---5分钟。
参考答案: Our school has a long history and a large number of its earlier students later became experts in different fields,including some well-known scientists and artists.During recent years,it has experienced great changes and well-equipped laboratory has just been put into use.The school is beautiful,and it’s always a great pleasure to take a walk around during breaks.It won’t be long before I graduate,but I’ll certainly miss the school and be very proud of it.