A、A.boiling and cavitations; low temperature
B、B.boiling and cavitations; pressurized
C、C.leaking and boiling; low temperature
D、D.leaking and boiling; pressurized
更多“When the heavy fuel oil is heated to achieve the viscosity of 10-15 cst, may occur.To avoid this, a system is used in most occasions（）”相关的问题
A、A.The diesel oil must never be allowed to mix with the heavy fuel B、B.The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valve C、C.The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valve D、D.The heating steam must be secured before the diesel oil passes through the three-way valve
A、increase the starting air pressure B、use a higher than normal cranking speed C、increase the fuel injection pressure D、use a fuel having a lower ignition temperature
A、(1) only is correct B、(2) only is correct C、both (1) and (2) are correct D、neither (1) or (2) are correct
A、at high speed and full load B、at low speed and part load C、when heavy fuel oil is used at sea D、when the ships run long distance
A、A.type of fuel transfer pump aboard B、B.temperature of the fuel oil being received C、C.size of the fuel storage tanks ashore D、D.distance from the fuel oil storage tanks ashore
A、regulate the fuel supply B、maintain a constant fuel viscosity at the fuel valves C、maintain efficient cooling D、alter the fuel density
A、cold corrosion of the nozzles B、fuel viscosity for better atomization C、carbon accumulation on the nozzles D、fuel detonation in the cylinders
A、pumped overboard to calm the seas B、drained to the lower hull to reduce free surfaces C、filled to ensure that sufficient fuel oil is available during a lengthy emergency D、partially drained to increase free surfaces in order to reduce motions
A、change from heavy fuel oil to diesel oil for mail engine B、pumping oil bilge water C、change sea chest form high level one to lower one D、test emergency generator
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