在一定的生产规模限度内，随产量增减成正比例变化的是（）。 ["单位变动成本","变动成本","固定成本","单位固定成本"]
Your company has a single active directory forest that has an active directory domain named na.contoso.com zone. you have enabled DNS scavenging on Server1. Three weeks later， you notice that the stale resource records remain in na.contoso.com. You need to ensure that the stale resource records are removed from na.contoso.com. What should you do？ （） [" Stop and restart the DNS service on Server1."," Enable DNS scavenging on the na.contoso.com zone."," Run the dnscmd Server1 \/AgeAllRecords command on Server1."," Run the dnscmd Server1 \/StartScavenging command on Server1."]
同性恋
法医尸体检验的目的是（） ["确定死因","鉴别暴力死或非暴力死","判断自杀、他杀或灾害事故","确定毒物性质及其含量","推断死亡时间"]
下列因素中，影响盈亏平衡点产量的因素是（）。 ["员工数量","所得税","设计生产能力","产品价格"]
珊瑚礁有（）、（）和（）三种类型。
