A、slightly less than the line frequency
B、the same as the line frequency
C、slightly greater than the line frequency
D、All of the above
更多“Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine （）”相关的问题
A、check and regulate the water level B、close the air cock once fires are lit C、blowdown the gage glass D、crack the steam stop to assure protective steam flow
A、check and regulate the water level B、close the air cock once fires are lit C、blowdown the gage glass D、crack the steam stop to assure protective steam flow
A、The administrator has failed to run 'bosboot -ad <2nd disk>' prior to the bootlist command. B、The administrator has failed to run 'bootinfo -B <2nd disk>' prior to the bootlist command. C、The administrator has failed to run 'mirrorvg -m rootvg <2nd disk>' prior to the bootlist command. D、The administrator has failed to run 'bosboot -ad /dev/ipldevice <2nd disk>' prior to the bootlist command.
A、The adapter must be taken offline prior to the firmware update. B、The system has not been rebooted since the adapter was added to the LPAR. C、The adapter must be assigned to the service partition prior to updating the firmware. D、The adapter must be dynamically removed from the LPAR prior to updating thefirmware.
A、Always stop the server prior to the backup B、Stop the server or lock the tables prior to the backup C、Stop the server or lock the databases prior to the backup D、Make a copy of the .frm, .myd, and the .myi files E、Make a copy of the binary log and tablespace files
A、slightly less than the oncoming generator frequency B、the same as the bus frequency C、slightly greater than the bus frequency D、the same as the bus voltage
A、Lock the turbine rotor and slowly bleed in steam until operating temperature is reached B、Run the pump at high speed with the discharge valves closed C、Run the turbine at slow speed with the pump disconnected D、Shut the discharge valve and run the pump at slow speed
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