When it is necessary to open a refrigeration system for repairs and the system will be open for more than a few minutes, the open ends of the system should be ().
A、dehydrated
B、purged
C、plugged
D、evacuated
A、dehydrated
B、purged
C、plugged
D、evacuated
A、It is necessary to forward ARP requests to remote hosts. B、It is necessary when translated traffic belongs to the same subnet as the ingress interface. C、It is not automatic and you must configure it. D、It is enabled by default and you do not need to configure it.
A、When a vessel is alongside the wharf, it’s necessary for the ship to keep a 24-hour deck watch to guarantee the safety of the ship and the cargo. B、When a vessel is alongside the wharf, t’s necessary for the ship to keep a 24-hour gangway watch to guarantee the safety of the ship and the cargo. C、When a vessel is alongside the port, it’s necessary for the ship to keep a 24-hour deck watch to guarantee the safety of the ship and the cargo. D、When a vessel is alongside the port, it’s necessary for the ship to keep a 24-hour gangway watch to guarantee the safety of the ship and the cargo.
A、A. when installing SSD drives B、B. when adding a new workload C、C. when installing SATA drives D、D. when adding more Linux hosts
A、at anchor and heading into the wind B、backing into the wind C、carrying lee rudder D、necessary to apply a leeway correction to the course
A、When the windlass is in trouble, the sailor must go and call the electrician to repair it. B、When the derrick is in trouble, the sailor must go and call the electrician to repair it. C、When the winch is in trouble, the sailor must go and call the electrician to repair it. D、When the winch is in trouble, the sailor must go and call the carpenter to repair it.
A、When it is a DC machine B、When it is an AC machine C、Any machine that operates on over 100 volts D、Only when working on wet steel plates