One of your customers has deployed a Layer 3 gateway in the untrusted network. Which gateway mode is appropriate for this customer？（） [" Virtual Gateway"," Real-IP Gateway"," NAT Gateway"," Central Gateway"]
个体难以清楚陈述、只能借助于某些作业形式问接推测其存在的知识是（） ["感性知识","命题知识","程序性知识","陈述性知识"]
杜比数字音响技术是一种新的立体环绕声技术，它采用了（）个声道。 ["2","6","4","5"]
（）是衡量领导干部作风是否端正的试金石。 ["是否抓实干、务求实效","是否艰苦奋斗、勤俭节约","是心系群众、服务人民，还是高高在上、脱离群众","是否顾全大局、令行禁止"]
表演艺术的形象构成是在（）过程中流动展现出来的。
谷物湿法加工的主要产品是（）、蛋白质等。
