简述中国主要民族的分布特点
A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（） [" 255.255.240.0"," 255.255.248.0"," 255.255.252.0"," 255.255.254.0"," 255.255.255.0"," 255.255.255.192"]
下列说法错误的是：（） ["最保守的民族都是笃信宗教的民族","笃信宗教的民族是最保守传统的民族","最传统的民族是思想观念不容易变化的民族","中国人是一个笃信宗教和神的民族"]
乐意与人交谈，讲话礼貌。是《纲要》中（）领域教育的目标之一。 ["健康","语言","社会","科学"]
《春秋》
