视网膜中央静脉栓塞的治疗原则为()。
A、血管扩张剂、纤溶剂
B、无确实有效的治疗方案
C、降低眼压
D、吸氧
参考答案:B
.Mr. Li_____a secretary for five years in the company, and now he is the general manager of it.
A.is
B.was
C.had been
D.has been
黄龙汤煎时加桔梗一撮的主要用意是()
A.升提以防正脱
B.宣肺以利咽
C.宣肺以排脓
D.宣肺以化痰
E.宣肺以降腑气