A、maintain liquid refrigerant at the suction of the compressor
B、maintain a preset suction pressure to the compressor
C、start and stop the compressor at preset operating pressures
D、operate at minimum efficiency
更多“The purpose of the low pressure cut-out switch is to （）.”相关的问题
A、containers are classified as general purpose (dry cargo) container and specific purpose container B、general purpose container (GP) is suitable for the widest varieties of cargo C、specific purpose container is suitable for the specific cargo D、bulk container， reefer container， open-top container are all general purpose containers
A、containers are classified as general purpose (dry cargo) container and specific purpose container B、general purpose container (GP) is suitable for the widest varieties of cargo C、specific purpose container is suitable for the specific cargo D、bulk container， reefer container， open-top container are all general purpose containers
A、the purpose of trimming B、the approval for ballast C、the purpose of voyage D、the approval for operation
A、reduce the turbocharger operating temperature B、increase the pressure of the inlet air C、increase the density of the inter air D、reduce the blower operating temperature
A、To support the overhang of the stern B、To strengthen the plating against the pounding of the sea C、To add strength to the deck beams which support the weather deck D、To support the plating of a cylindrical tank
A、To support the overhang of the stern B、To strength the plating against the pounding of the sea C、To add srength to the deck beams which support the weather deck D、To support the plating of a cylindrical tank
A、provide energy to operate the engine between power impulses B、neutralize the primary inertia force of the crankshaft C、reduce the shock of starting loads on the main bearings D、prevent the engine from operating at critical speed
A、keep the movement of the davits at the same speed B、keep the davits from slipping when they are in the stowed position C、prevent vibration during lowering of the boat D、support the manropes
A、seal the space between the piston and the liner B、reduce the amount of lube oil burned in the combustion chamber C、transmit heat from the piston to the cylinder liner D、damp out fluctuations of the piston side thrust
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