酶基因克隆的主要操作步骤包括（） ["目的酶基因的获取","构建重组表达载体","重组载体导入受体细胞","加入诱导剂使目的酶表达","对重组子进行筛选与鉴定"]
WTO与GATT之间的区别（） ["WTO是永久性的正式的国际组织，具有法律人格","WTO调整的经贸关系领域远宽于GATT","WTO是统一的多边贸易管理机构要求一揽子接受","WTO具有健全的机构体系和更广泛的代表性"]
表面特质
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. You intend to configure FILESTREAM data, enabling FILESTREAM for file I/O streaming access and allowing remote client computers to have streaming access to FILESTREAM data. You must make sure that FILESTREAM data is enabled. In the options below, which service should you configure? （） ["You should configure Distributed File System","You should configure SQL Server","You should configure SQL Server Full Text","You should configure SQL Server VSS Writer"]
特质
以无菌形式提供的医疗器械，其分类应当不低于（）。
