对丹毒病人治疗护理措施应包括
A．抬高患肢
B．切开引流
C．呼吸道隔离
D．应用抗生素
E．50%硫酸镁湿敷
参考答案：A,D,E
摇床选煤主要特点有（）。
A、有效分选粒度下限低
B、分选精度较跳汰高
C、单位面积处理能力低
D、适宜于6mm以下粒度的分选
In learning a foreign language, （） English, one should first pay attention to speaking, which is the groundwork of reading and writing.
A. says
B. say
C. to say
D. saying
