A subquery can be used to（）.

1、The following measures can be used to

The following measures can be used to improve oily water separator’s separating effect except （）Aoverhauling every two yearBworking at intervalsCrenewing filtration materialDpumping bilge water from different layers respectively

2、（）can be used for carrying goods to th

（）can be used for carrying goods to the pointed place automatically.AAutomatic beltBAutomatic conveyorCAutomatic Guided VehicleDRobot

3、Which files can be used together to al

Which files can be used together to allow remote command execution on a server?（）A/etc/.rhosts and $HOME/hosts.equivB/etc/hosts.equiv and $HOME/.rhostsC/etc/rhosts.equiv and $HOST/.rhostsD/etc/hosts.equiv and $HOME/.hosts.equiv

4、A subquery can be used to （）.

A subquery can be used to （）.A Create groups of dataB Sort data in a specific orderC Convert data to a different formatD Retrieve data based on an unknown conditio

5、Which command can be used from a PC to

Which command can be used from a PC to verfy the connectivity between host that connect through path?（）A tracert addressB ping addressC arp addressD traceroute addre

6、Bridge gauge can be used to measure （）

Bridge gauge can be used to measure （） of a diesel engine.Adiameters of journalsBdeflections of crankwebsCdiameters of crankpinsDnone of the above