更多"The most suitable pump for oily wat"的相关试题:
[单项选择]Which of the following pumps will most affect oily water separator performance and give the worst result?（）
A. reciprocating pump
B. vane pump
C. screw pump
D. centrifugal pump
[单项选择]Most pump manufacturers recommend that the suction piping dimension for centrifugal pumps be （）.
A. one size smaller than the pump suction nozzle
B. the same size as the pump suction nozzle
C. one size larger than the pump suction nozzle
D. installed with a short radius elbow at the pump
[单项选择]Most pump manufacturers recommended that the discharge piping for centrifugal pumps be （）.
A. one size larger than the pump discharge nozzle
B. the same size as the pump discharge nozzle
C. one size smaller than the pump discharge nozzle
D. installed with a short radius elbow at the pump
[单项选择]Oily water separator mis-alarms, the most possible reason is （）
A. separating oil too fast
B. the sensor flushed badly
C. the discharge solenoid value out of order
D. too low heating temperature
[单项选择]A water pump can not supply water after startingIt may be caused by （）.
A. closed discharge valve
B. broken pipe line
C. worn shaft
D. both A and B
[单项选择]After stopping oily water separator, sea water should be permitted for （） minutes,（）should be closed after stopping pump to reduce oxidation corrosion of inner wall.
A. 15；inlet value
B. 15；inlet and outlet value
C. 30；inlet value
D. 30；inlet and outlet value
[单项选择]The domestic fresh water pump starters are controlled by pressure switches which operate when the pressure in the tank varies within predetermined limits as water is drawn offThe word “which” means （）.
A. starters
B. pressure switches
C. pressure
D. water
[单项选择]Domestic water pump is started automatically by （） which operates as the water level falls to a predetermined level.
A. a level controller
B. a temperature switch
C. a pressure switch
D. a floating ball
[单项选择]Because the flow rate of supply water pump is too large, oily water separator does not work wellWhich of the following is not the reason?（）
A. the monitoring equipment is out of order
B. separating effect becomes bad
C. inner wall is contaminated
D. separating effect becomes bad and inner wall is contaminated
[单项选择]The motor for the fresh water pump （）.
A. need to repair
B. need to be repaired
C. needs to repair
D. needs repairing
[单项选择]The pressure head of a water pump is given in the unit of （）.
A. kg
B. MPa
C. mH20
D. None of the above
[单项选择]Before the oily water separator put into operation, it should be （）
A. filled with bilge water
B. filled with oil
C. filled with clean water
D. be emptied
[单项选择]When started, a complete oily water separating unit is first filled （）The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.
A. with dirty water
B. with clean water
C. by oily water
D. by mixed water
[单项选择]When oily water separator is operating, which measure （） is wrong.
A. pay attention to operating parameters
B. renew and clean separating units in time
C. check oil level in separator to prevent overload
D. check separating effect, if it is bad, flush with large capacity water pump
[单项选择]What’s the advantage of oily water separator that meets the requirement of MEPC 60(33) over MEPC 107(49)?（）
A. more economic
B. larger capacity on oil treatment
C. less costive
D. more capable of separating emulsified oil
[单项选择]Before the oily water is installed on board ships, it must have （）
A. IOPP
B. type approval certificate
C. cargo ship safety equipment certificate
D. cargo ship safety certificate
[单项选择]The （）is fitted on an oily water separator.
A. sliding bowl bottom
B. gravity disc
C. bowl
D. liquid level detector
[单项选择]In an oily water separator the oil will travel （） to the oil collecting spaces.
A. upwards
B. downwards
C. outwards
D. forwards
[单项选择]In a domestic fresh water system, the pump starters are controlled by （） switches which operate when the pressure in the tank varies within predetermined limits as water is drawn off.
A. water level
B. water flow
C. temperature
D. pressure
