神经递质
On the topic of VLSM, which one of the following statements best describes the concept of the route aggregation?（） [" Deleting unusable addresses through the creation of many subnets."," Combining routes to multiple networks into one supernet."," Reclaiming unused space by means of changing the subnet size."," Calculating the available host addresses in the AS."]
下列情形中，可以认定为工伤的有（）。 ["在工作期间自杀、自残或故意犯罪","在上下班途中，受到非本人主要盖任的交通事故或者城市轨道交通、火车事故伤害","因工外出期间，由于工作原因受到伤害或者发生事故下落不明","在工作时间和工作场所内，因工作原因受到事故伤害"]
在HDPE双层水平防渗系统施工中，HDPE防渗膜铺设后，下一道施工程序（） ["土工复合物铺设","HDPE防渗膜试焊","HDPE防渗膜生产性焊接","渗滤液收集管铺设"]
面孔失认症
可使无效婚姻
