25kV带电体距固定接地体空气绝缘间隙困难值为()
A.220mm
B.240mm
C.260mm
D.280mm
参考答案:B
Nowadays, people get news around them and about the world from______media, on TV, by radio, in the newspaper or on the Internet. [ ]
A. formal
B. precious
C. various
D. normal
患者,男,20岁。5天前突发口眼歪斜,左眼睑闭合不全,左侧抬头纹消失,左侧面部肌肉时而抽搐,头部CT未见脑血管病变。舌淡、苔白、脉弦。用药宜首选( )
A.秦艽
B.全蝎
C.羌活
D.独活
E.威灵仙