A、open
B、close
C、drain
D、vent
更多“Pump up the starting air reservoirs to their maximum pressure and （）the air reservoirs and air system.”相关的问题
A、booster pump coming on the line and discharging properly B、booster pump failing to start C、booster pump being lined up in the wrong direction D、ship's pump speeding up
A、Press the F4 key during start up. B、Hold down the left Shift key during start up. C、Press the F2 key during start up. D、Press the F8 key during start up.
A、A.set the relief valve B、B.check the lubrication system C、C.vent the pump casing D、D.open the pump suction and discharge valves
A、The pump delivers full capacity when started, but gradually slackens off toan abnormally low flow B、The pump packing gland overheats after short operating periods C、The motor over-current protective device continually shuts the pump down D、Pounding noises can be heard at the pump suction chest
A、result in decreased acceleration time only B、lower the starting current and increase accelerating time C、cause a greater starting torque D、increase the starting current and pump capacity
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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