罗非鱼的系统发育与海水有关，所以适应盐度的范围很广。
《铁路旅客运输管理规则》规定，车站广播要坚持（）相统一。 ["服务性、时效性","计划性、针对性","思想性和知识性","服务性、娱乐性"]
《熊猫霍尔的生活观》的作者是？（） ["霍夫曼","歌德","席勒","格拉斯"]
Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？ （） ["Designated Root Cost","bridge ID priority","max age","bridge ID MAC address","Designated Root Priority","forward delay"]
知识管理的编码策略又叫（） ["显性策略","隐性策略","公共策略","私人策略"]
环境物理效应
