企业期末存货计价如果过高，可能会引起（）
铝塑共挤门窗把铝合金和塑料门窗融为一体，每平方米比塑料门窗节约30%塑料，比铝合金门窗节约（）倍的材料。 ["1","2","3","4"]
A Windows Communication Foundation (WCF) service is required to log all authorization attempts to the Windows Event Log. You need to configure a behavior and apply it to the service to support this requirement. Which behavior should you configure and apply?（） [" service Authentication Manager"," service Authorization"," service Credentials"," service Security Audit"]
试述市场经济对犯罪的产生所具有的消极影响。
在安装了防火墙之后，为什么还需要进行入侵检测？
什么是防火墙？
