【单选题】An anesthetist should be present throughout the operation, in case______.
B.
a surgeon might need the anesthetist to give some medicine to calm him down
C.
the patient hadn't been given an anesthetic deep enough
D.
the anesthetist didn't know the process of the operation
【简答题】实验室里用结晶法分离氯化钠和硝酸钾的混合物,以得到纯度较高的氯化钠和硝酸钾. (1)实验步骤分为五步:1过滤 2第二次过滤 3降温使晶体析出 4加热蒸发溶剂至有部分晶体析出 5加热溶解.正确的操作顺序是(写编号)______. (2)第一次过滤应在什么温度下进行?______.所得晶体是______,第二次过滤在______温度下进行,所得晶体是______. (3)写出下列实验操作中所需仪器的名...
【单选题】气味芳香,含挥发性成分的薄荷、砂仁、豆蔻、鱼腥草饮片等,以免其有效成分散失,在煎煮时不宜( )。
【单选题】按照建筑面积计算规则,不计算建筑面积的是()。
【单选题】A patient suffering from heat exhaustion should be______.
A.
moved to a cool room and told to lie down
B.
kept standing and encouraged to walk slowly and continuously
C.
given a glass of water and told to return to work after 15 minutes of rest
D.
None of the above are correct
【判断题】气味芳香,含挥发性成分的薄荷、砂仁、豆蔻、鱼腥草饮片等,为防止有效成分流失,煎煮时间不宜过长
【单选题】气味芳香,含挥发性成分的薄荷、砂仁、豆蔻、鱼腥草饮片等,为防止有效成分流失,煎煮时间不宜