题目内容

眼内空腔包括什么?

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朱祁钰死后葬于何处?

在LINUX系统中()命令用来改变当前工作目录。

A. cd
B. rm
C. get
D. put

You have created a database link, devdb.us.oracle.com, between the databases PRODDB and DEVDB. You want to import schema objects of the HR user using Oracle Data Pump from thedevelopment database, DEVDB, to the production database, PRODDB. You execute the following command on the target database server: $impdp system/manager directory = DB_DATA dumpfile = schemas.dat schemas = hr flashback_time = 2004-02-03 09:00 The command fails, displaying the following error: ORA-39001: invalid argument value ORA-39000: bad dump file specification ORA-31640: unable to open dump file “/home/oracle/schema/schemas.dat” for read ORA-27037: unable to obtain file status What would you do to overcome the error()

A. remove the dumpfile option in the command
B. remove the flashback_time option in the command
C. remove the dumpfile option and add the network_link = devdb.us.oracle.com option in the command(Replace thedumpfile option with the network_link = devdb.us.oracle.com)
D. add the user, SYSTEM, to the schemas option in the command
E. remove the schemas option and add the network_link = devdb.us.oracle.com option in the command
F. add network_link = devdb.us.oracle.com option in the command

关于运动的合成,下列说法正确的是()。

A. 两个直线运动的合运动一定是直线运动
B. 合运动的位移是分运动位移的矢量和
C. 合运动的速度一定是大于其中一个分运动的速度
D. 合运动的时间一定是分运动的时间之和

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