已知复数z满足:z2=i,(i是虚数单位),则z=( ).
Which skirt do you like ___________, the red one or the blue one?[ ]
A. well
B. good
C. better
D. best
毒蛇咬伤现场急救的首要措施是()。
A.距伤口近心端5cm处环行缚扎
B.大量清水冲洗伤口
C.用消毒尖刀将咬痕处挑开
D.肢体肿胀处可外敷中草药或南通蛇药片
E.用普鲁卡因做肢体环状阻滞