Which of the following commands will set the duplex of a network adapter？（） no -a media_speed=100_Full_Duplex en0。 ifconfig -a media_speed=100_Full_Duplex ent0。 chdev -l ent0 -a media_speed=100_Full_Duplex。 chinet -l en0 -a media_speed=100_Full_Duplex en0。
请简要说明已经进入维护阶段的发电机绝缘测试的内容、步骤.
A 1500 page print job was sent to the "pel" queue. The job was running for several minutes before it was determined that the job was not needed. Which of the following options will delete the job（） Ipstat Queue Dev Status Job Files User PP % Hks Cp Rnk pd pel RUNNING 201 STDIN.27648 root 750 10 1000 1 1 kill 201。 cancel 201。 disable pel。 Ip-d/var/spool/lpd/STDIN.27648。
User SCOTT wants to back out the transactions on the REGIONS table in his schema. As a DBA， which commands must you execute to enable SCOTT to flash back the transactions？（） ALTER DATABASE FLASHBACK ON。 GRANT SELECT any transaction TO scott。 GRANT EXECUTE ON dbms_flashback TO scott。 ALTER DATABASE ADD SUPPLEMENTAL LOG DATA。 ALTER TABLESPACE undots1 RETENTION GUARANTEE。 ALTER DATABASE ADD SUPPLEMENTAL LOG DATA （PRIMARY KEY） COLUMNS。
硫酸钡吸附血浆中主要含下列哪一组凝血因子（） 因子Ⅶ和因子X。 因子V和因子Ⅷ。 因子Ⅱ，V，Ⅶ，X。 因子I，Ⅲ，V，Ⅶ。
Which of the following commands should be used to reset the Virtual Memory Manager tuning parameters to their default values？（）
