异染粒
Which security token may carry user attribute information as part of the defined token format?（） ["Kerberos","RACF Token","SAML Assertion","Username Toke"]
（）主要用于涉及地理空间较大的建设项目，如公路、铁道、管道等“线型”影响项目和区域开发项目。 ["系统流图法","层次分析法","叠加图法","情景分析法"]
Which of the following statements is used to prevent user TOM from adding and deleting data in table TAB1?（） ["REVOKE ADD, DELETE FROM USER tom ON TABLE tab1","REVOKE ADD, DELETE ON TABLE tab1 FROM USER tom","REVOKE INSERT, DELETE FROM USER tom ON TABLE tab1","REVOKE INSERT, DELETE ON TABLE tab1 FROM USER tom"]
假定一个拥有一亿人口的大国和百万人口的小国人口的居民年龄的差异程度相同，现在各自用重复的抽样方法抽取本国的1%人口计算平均年龄，则平均年龄抽样标准误差（）。 ["不能确定","两者相等","前者比后者大","前者比后者小"]
更换旋转编码器都需要什么工具?有哪些更换步骤?
