Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.

A .  changing the default policy map from a default MTU of 1500 to 9216 B .  using the command system jumbomtu 9216 C .  using the command interface MTU 9216 D .  configuring the default Ethernet system class to an MTU of 9216 with a new network QoS policy ma

A . approval B . authorization C . consideration D . discussio

A . On the Windows 95 computer， replace the CPU with a faster model. B . On the Windows 95 computer， reformat the disk with FAT32. C . On the Windows 98 computer， reformat the disk with FAT32. D . On the Windows 98 computer， increase the amount of free disk space on the hard disk. E . On the Windows NT Workstation 4.0 computer， replace the CPU with a faster model. F . On the Windows NT Workstation 4.0 computer， increase the amount of free disk space on the hard disk.

A . film speed B . penetrometer C . exposure reading D . time of exposure

A . open the indicator cocks B . supply some LO to cylinder liner wall with lubricator C . put the fuel handle in the "stop" position D . pump up the air bottle

A . disable auto rf and configure manually. B . disable all 802.11b data rates. C . power access point to full power. D . hard code the channel.

A . Administratively shut down the interface. B . Physically secure the interface. C . Create an access list and apply it to the virtual terminal interfaces with the access-group command. D . Configure a virtual terminal password and login process. E . Enter an access list and apply it to the virtual terminal interfaces using the access-class command.

A . Administratively shut down the interface. B . Physically secure the interface. C . Create an access list and apply it to the virtual terminal interfaces with the access-group command. D . Configure a virtual terminal password and login process. E . Enter an access list and apply it to the virtual terminal interfaces using the access-class command.

A . the Coast Guard B . the ABS C . the shipyard fire department D . a certified marine chemist

A .  within a method called jspInit B .  within the page directive of the JSP page C .  within a scriptlet at the top of the JSP page D .  within the

A . Administratively shut down the interfaces. B . Physically secure the interfaces. C . Configure a virtual terminal password and login process. D . Enter an access list and apply it to the terminal interfaces using the access-class command. E . Create an access list and apply it to the terminal interfaces using the access-group command.

A . kill 201 B . cancel 201 C . disable pcl D . rm /var/spool/lpd/STDIN.27648

A . Administratively shut down the interfaces. B . Physically secure the interfaces. C . Configure a virtual terminal password and login process. D . Enter an access list and apply it to the terminal interfaces using the access-class command. E . Create an access list and apply it to the terminal interfaces using the access-group command

A . approval B . authorization C . consideration D . discussio

A．which; arose B．that; arising C．which; arisen D．that; arise

A．blaming B．blame C．to blame D．to be blaming

22. The writer says that 8t a circus we can see animals doing cIever tricks. 23. The trainer usually gives the animal a piece of candy or fruit after it has done the trick. 24. The reward in the passage means "attention paid to a good behavior". 25. Many animals may be trained to do simple jobs if they know who their trainers are. 26. Geese can be used to guard a house. 27. When the pigeon sees a ball which looks different from the others , it makes a noise. 28. Trainer usually spends 40 days or so training a pigeon to inspect sm811 steel balls. 29. An ape is a large monkey. 30. Scientists believe apes may drive buses one day.

A．must repair B．should be in repair C．has to be repairable D．needs repairing

A、Provide thorough protocol trainings and refreshers. B、Notify all staff members of protocol amendments. C、 Update the Operations Manual to reflect the changes to the protocol. D、All of the above.

A．A.custom B．B.customs C．C.Customer D．D.Authorities