关节的基本结构是() ["A．关节面、关节囊、关节软骨","B．关节面、关节囊、关节腔","C．关节面、关节盘、关节腔","D．关节盘、关节唇、关节囊","E．关节面、关节腔、关节唇"] 在什么范围内PaCO变化而脑血流不发生相应改变() ["A．低于25mmHg","B．低于40mmHg","C．高于100mmHg","D．低于25mmHg，高于100mmHg","E．低于40mmHg，高于120mmHg"] 有关第一颈椎的描述，正确的是() ["A．没有椎体、棘突和关节突","B．前弓长，后弓长","C．上连枢椎","D．由椎体和椎弓构成","E．呈环状，故名寰椎"] 正常人侧卧位脑脊液压力为() ["A．300～325mmH0","B．70～180mmH0","C．250～300mmH0","D．180～200mmH0","E．200～250mmH0"] 下列属阿片受体拮抗药的是() ["A．芬太尼","B．镇痛新","C．奇曼丁","D．西乐保","E．纳洛酮"] 脑压正常时，日产生脑脊液()