毒蛇咬伤后,对创口扩创排毒,下列各项中错误的是()
A. 扩创法常规消毒后,沿牙痕作纵行切口,长约1.5cm,深达皮下
B. 伤口作“十”切口
C. 血循毒蛇咬伤后,若伤口流血不止,且全身有出血现象者,则应立即扩创
D. 切口扩创时,如发现有毒牙遗留应取出,并用手由近心端向伤口附近反复挤压,以排出毒血
E. 血循毒蛇咬伤后,若伤口流血不止,且全身有出血现象者,则不应扩创
在见光条件下接触空气不会形成过氧化物的试剂是( )。
A. 乙醚
B. 四氢呋喃
C. 液体石蜡
D. 甲苯
The city is______of three sections, which are separated by rivers.
A. upset
B. valued
C. composed
D. ventured
Hydrogen ()
A. is a widely-used fuel
B. is not yet in general use as a fuel
C. is not a particularly easy fuel to store
D. is a more economical fuel than wind energy