在建工程项目监管台帐应包含哪些主要内容？
职工福利费，一般按工资总额的13%估算
在单位速度梯度下流动时，单位面积上产生的内摩擦力是指（） ["动力黏度","运动黏度","相对黏度","其他"]
环境容量包括（）和（）二个方面。
Refer to the exhibit. What two statements are true？（） ["The IP address of the backup designated router （BDR） is FE80：：205：5FFF：FED3：5808","This is the designated router （DR） on the FastEthernet 0\/0 link","Interface FastEthernet 0\/0 was configured with the ipv6 ospf 1 area 1 command","OSPF version 2 has been enabled to support IPv6","The output was generated by the show ip interface command"]
简述群体的概念
