[名词解释] 第一代计算机 

从咽漱液中分离流感病毒常接种于（） ["Hela细胞","豚鼠","鸡胚和狗肾传代细胞","鸡胚和Hela细胞"] 脚、矿石码头堆场机械的堆料能力应与什么相匹配？（） ["码头装船能力","装车能力","卸车能力","卸船、卸车能力"] 什么是“酸雨”？ Refer to the exhibit. Which two statements are correct regarding the creation of a multicas tdistribution tree？ （） [" Each router determines where to send the JOIN request."," The tree will be built based on the IP address of the E2 interface on router E"," The best path to the source will be discovered in the unicast routing table on router B"," The best path to the source will be discovered in the unicast routing table on router C"," The best path to the source will be discovered in the unicast routing table on router E"] 神经递质 第一代计算机