You are part of the DBA team working for a multinational bank. The team is responsible for performing administrative tasks on the database server located at the home office. The database server at the home office has a production database and a test database named TESTDB. The test database is primarily used for testing database commands and configuration settings befor implementing these settings on the production database. The test database is also used for the development of database applications. You have been asked by the senior DBA to grant the SYSDBA privilege to a new team member， John， so that he can perform some administrative tasks， such as shutdown and startup operations， on TESTDB. You use the password file to configure remote authentication on the TESTDB database. You execute the following statement to grant the SYSDBA privilege to John： SQL>GRANT SYSDBA TO john； However， you receive the following error： ORA-01996： GRANT failed： password file ’c：\oracle\ora9i\dbs\testdb.pwd’ is full Which action should you take to add the user john to the password file without removing any of the existing users？（） Create another password file and then re-execute the GRANT statement.。 Re-create the password file， specifying a larger number of allowed entries， and then re-execute the GRANT statement.。 Change the value of the REMOTE_LOGIN_PASSWORDFILE initialization parameter in theinitialization parameter file to NONE and then re-execute the GRANT statement.。 Change the value of the REMOTE_LOGIN_PASSWORDFILE initialization parameter in the initialization parameter file to SHARED and then re-execute the GRANT statement.。
属于非电量的继电器是（）。 功率方向继电器。 瓦斯继电器。 阻抗继电器。
往复式压缩机的气缸（套）按冷却方式划分为（）两种基本结构。
在水利工程概预算的费用构成中，下列（）费用属于独立费用。 人工费。 材料费。 建设管理费。 计划利润。
变压器绝缘受潮会（）。 直流电阻增加。 总损耗增加。 介质损增加。
A programmer must create a generic class MinMax and the type parameter of MinMax must implement Comparable. Which implementation of MinMax will compile？（）
