保持锅水碱度在一定范围是为了() ["防止结垢","防止腐蚀","降低含盐量","防止蒸汽品质恶化"]
You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application allows users to post comments to a page that can be viewed by other users. You add a SqlDataSource control named SqlDS1. You write the following code segment. (Line numbers are included for reference only.) 01 private void SaveComment() 02 { 03 string ipaddr; 04 05 SqlDS1.InsertParameters["IPAddress"].DefaultValue = ipaddr; 06 ... 07 SqlDS1.Insert(); 08 } You need to ensure that the IP Address of each user who posts a comment is captured along with the user’s comment. Which code segment should you insert at line 04?() ["A","B","C","D"]
住宅区的物业服务企业不对管理区域内的共用消防设施进行维护管理的,依据消防法的规定,处理方式有()。 ["责令限期改正","逾期不改正的,对直接负责的主管人员和其他直接责任人员依法给予行政处分或者警告处罚","拘留","罚款"]
打开一个数据库使之成为当前库,有()种方法,其中之一使用的命令关键字为()。
在我国多层次的资本市场中,场内市场包括() ["主板","创业板","股权众筹","区域性股权交易市场"]
使用create database命令定义一个数据库,包括定义()文件和()文件两个部分。