肾外伤,肾实质内血肿的典型声像图表现为()
A.增强回声肿块
B.低回声肿块
C.部分囊性、部分实性的肿块
D.以上各项均是
参考答案:D
Wind power is an ancient source of energy ______________we may return in the near future. [ ]
A. on which
B. by which
C. to which
D. from which
中央动脉阻塞的抢救措施包括().
A.按摩眼球,降低眼压
B.纤溶制剂溶栓
C.治疗原发病,高血压者降血压
D.吸氧
E.舌下含化硝酸甘油和其他血管扩张药物的应用