以下哪款ONU不可以接入语音业务？（） ["O-24240-Q","I-240E-P","I-040E-P","I-240E-Q"]
环境风险分析法中，需要考虑的环境因素包括有（） ["汇率和利率波动","同业竞争","宏观经济条件","资本充足率","商业周期"]
如果一个内部网络对外的出口只有一个，那么最好配置（） [" 缺省路由"," 主机路由"," 动态路由"]
杂交
Your company has two primary divisions： Products and Services. The Products division is on network 150.10.640/21. The Services division is on network 150.10.72.0/21. You want to summarize both networks into one routing statement. Which IP address and subnet mask combination would most efficiently accomplish this？（） [" 150.10.64.0\/21"," 150.10.64.0\/22"," 150.10.64.0\/20"," 150.10.0.0.\/16"]
鲁迅与果戈理的比较。
