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电流互感器为什么要进行伏安特性试验？

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在发动订单详细页面的接收方选择栏只能填写1个邮箱地址。（）

A. 正确
B. 错误

烟花爆竹工厂危险品生产区内，1.1级中转库单库存药量最大为（）kg。

A. 500
B. 1000
C. 1500

《上门服务登记簿》、“上门服务证”必须由（）加锁入库保管。

A. 专人
B. 任意银行柜员

You are working as a Database Administrator. Despite having a password in the data dictionary as change_on_install， you always log on to the database MYNEWDB using operating system authentication. Your organization is planning to recruit two junior-level DBAs. You decide to enable remote authentication in your database so that the new DBAs can log on to the database from their workstations to carry out administrative tasks. To allow the new DBAs to perform the administrative tasks， you create a password file on the database server using the following command： ORAPWD file=d：\oracle\ora9i\orapwU01 password=admin entries=4 After creating the password file， you remove the operating system authentication and change the value of the REMOTE_LOGIN_PASSWORDFILE parameter to EXCLUSIVE. You also create a net service name as MYNEWDB that allows the new DBAs to connect to the database server from their workstations using this net service name. Which command must you use to connect to the database to start it？（）

A. CONNECT / AS SYSDBA
B. CONNECT sys/admin AS SYSDBA
CONNECT sys/admin@mynewdb AS SYSDBA
D. CONNECT sys/change_on_install AS SYSDBA