In a web page with chechboxes you need to write e jquery that retruns the number checked checkboxes.() ["var n = $(“input:checked”).length;","var n = $(“:input, :checked”).length;","var n = $(“input:selected”).length;","var n = $(“:input, :selected”).length;"]
医疗器械经营企业经营的医疗器械发生重大质量事故的,应当在()内报告所在地省、自治区、直辖市食品药品监督管理部门。
在CSS语言中下列哪些选项是背景图像的属性() ["背景重复","背景附件","纵向排列","背景位置"]
我国陶器艺术发展的高峰是() ["宋代","元代","唐代","清代"]
You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance which contains a database. Now your company CIO assigns a task to you. You have to check the performance of the SQL Server 2008 instance. You have to find out which common language runtime (CLR) queries takes the longest-running time. So in the options below, which dynamic management view should you choose to use?() ["sys.dm_os_wait_stats ","sys.dm_exec_requests ","sys.dm_exec_sessions ","sys.dm_exec_query_stat"]
第三类医疗器械经营企业未在每年年底前向食品药品监督管理部门提交年度自查报告的,由县级以上食品药品监督管理部门责令限期改正,给予警告;拒不改正的,处()罚款。