Reducing the liquid free surfaces in a vessel reduces the().
A、roll period
B、metacentric height
C、waterplane area
D、vessel's draft
A、roll period
B、metacentric height
C、waterplane area
D、vessel's draft
A、centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump B、centerline of the pump and the suction liquid level when the source of liquid is above the pump C、centerline of the pump and the level of the discharge liquid D、liquid levels of the suction and discharge
A、directly increase the pressure of the liquid being pumped B、directly increase the velocity of the liquid being pumped C、convert the potential energy of the liquid to kinetic energy D、separate air from the liquid being pumped
A、reducing the erosion of the cargo tanks B、increasing the total quantity of oil to carry C、reducing the quantity of water contained in oil D、reducing cargo discharged time
A、draw the liquid in;force the liquid out B、force the liquid out;draw the liquid in C、suction;draw D、deliver;outlet
A、Corrosion from the shifting liquid B、Rupturing of bulkheads from the shifting liquid C、Loss of stability from free surface effect D、Holing of the tank bottom from the weight of the shifting liquid
A、At the designed operating temperature, the liquid refrigerant charge has changed to a vapor B、The liquid refrigerant tends to collect at the bellows or diaphragm and reduces the valve sensitivity C、The sensing bulb is empty of liquid refrigerant charge at the designed operating temperature D、The sensing bulb is never emptied of liquid refrigerant under normal operating conditions
A、the amount of liquid in the compartment B、the dimensions of the liquid surface and the vessel's displacement C、only the length of the compartment D、the vertical position of the liquid in the vessel
A、volume of displacement of the vessel B、dimensions of the surface of the liquid C、amount of liquid in slack tanks D、specific gravity of the liquid in the tank