If the electric motor driving an air compressor fails to start, the cause may be a ().
A、leaking unloader
B、tripped circuit breaker
C、control line leak
D、defective pop valve
A、leaking unloader
B、tripped circuit breaker
C、control line leak
D、defective pop valve
A、administer ammonia smelling salts B、check for serious burns on the body C、determine if he is breathing D、massage vigorously to restore circulation
A、After operation, start the electric motor. B、Before operation, stop the electric motor. C、Before operation, start the electric motor. D、After operation, stop the electric motor.
A、A.severe electrical storm B、B.fire on the pier C、C.fire on the ship D、D.any of the above
A、The coolant temperature must be maintained at 180℃ B、The thermostatic bypass valves must be manually opened before the engine is started C、The pressure cap must be removed while the engine is secured D、Electrical power to the heater must be secured before the cooling system is drained
A、A.flush water over any burned area of the patient B、B.apply ointment to the burned areas on the patient C、C.get assistance to shut down electrical power in the area D、D.remove the patient from the vicinity of the live electrical equipment or wiring
A、Shutting off electricity to damaged cables B、Pumping fire-fighting water overboard C、Maneuvering the vessel so the fire is on the lee side D、Removing burned debris from the cargo hold
A、Shutting off electricity to damaged cables B、Pumping fire-fighting water overboard C、Maneuvering the vessel so the fire is on the lee side D、Removing burned debris from the cargo hold
A、a check valve will close that prevents reverse circulation B、a centrifugal counterweight counteracts the force of gravity C、the electric pump motor will cut out D、the control lever will move to the stop position