[单选] 三相电压互感器Y／Y-6接法一、二次相角差为（）。

You have a server that runs Windows Server 2003 Service Pack 2 (SP2). A server application creates report files. The application saves the report files in a folder named Report. A service account is listed as the owner of all report files. You need to assign ownership of the report files to a user in a department named Audit. You must achieve this goal by using the minimum amount of administrative effort. What should you do? （） Rewrite the application.。 Create a scheduled task to run Attrib.exe.。 Create a scheduled task to run Icacls.exe.。 Use the Advanced Security settings to change the owner of each file.。 下列招标项目中，允许自然人投标的是（）。 设计项目招标。 监理项目招标。 绿化工程项目招标。 科研项目招标。 年年战骨埋荒外，空见蒲桃入汉家。作者：（） 试述生前入水的尸体征象 试述肾上腺素的主要药理作用及用途。 三相电压互感器Y／Y-6接法一、二次相角差为（）。