饲养标准
晋国上卿赵简子曾说：“克敌者，上大夫受县，下大夫受郡，士田十万，庶人工商遂。”材料反映了当时（）。 ["自然经济开始形成","士农工商等级森严","出现以郡统县的制度","血缘政治受到冲击"]
气团变性
晚期智人
You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. You configure the SQL Server instance to use the -T1222 and -T1204 trace flags during startup. You must make sure that your failure recovery plan performs backup of the use of the trace flags. So what action should you perform to achieve this goal? （） ["You should backup the master database","You should backup the default.trc file","You should backup the SQL Server registry hive.","You should backup the resource database&e"]
简答伟晶岩矿床中的主要矿产
