完全流产最佳的处理是( )
A．镇静、休息，上氧B．立即刮宫C．不需特殊处理D．先做凝血功能检查E．先行抗炎治疗再清宫
参考答案：C
Not having a good________ of English can be a serious obstacle to achieving your goals．[ ]
A．demand
B．appreciation
C．experience
D．command
通过含有稀硫酸废水的管线材质应为碳钢
