输血速度下列不恰当的是() ["成人一般调节在每分钟20ml","对失血性休克,应快速输入所需血量","小儿每分钟约10滴","心脏病患者宜每分钟1ml","一次输血的总时长不宜超过4小时"]	早期慢性支气管炎肺部X线表现是() ["两肺纹理增粗、紊乱","肺野透亮度增加","胸廓扩张、肋间增宽","无特殊征象","双肺轻度渗出性改变"]	制首乌的成品性状如何?	阻塞性肺气肿最常见的病因为() ["支气管哮喘","支气管异物阻塞","支气管扩张","肺结核","慢性支气管炎"]	霍乱最常见的死因是() ["脱水","低钾血症","急性肺水肿","急性肾衰竭","代谢性酸中毒"]	折角塞门安装在车辆的什么位置?