更多"Which of the following pumps will m"的相关试题:
[单项选择]Which of the following pumps is most suitable for an oily water separator?（）
A. reciprocating pump
B. vane pump
C. mono pump
D. axial-flow pump
[单项选择]Hydraulic pumps most commonly used in steering systems are of the （）.
A. lobe type
B. screw type
C. axial piston type
D. volute type
[单项选择]Which will most likely occur when entering shallow water? （）
A. Rudder action will become more effective
B. The vessel's list will change
C. The vessel's trim will change
D. An increase in speed will occur
[单项选择]The valve which is most suited for regulating the flow through a pipeline is a （）
A. gate valve
B. globe valve
C. swing-check valve
D. plug-cock valve
[单项选择]The most suitable pump for oily water separator feed duties is （）.
A. a reciprocating pump
B. a vane pump
C. a centrifugal pump
D. a triple screw pump
[单项选择]Which of the following pumps belongs to centrifugal pump?（）
A. Piston pump
B. Screw pump
C. Diffuser pump
D. Water-ring pump
[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]In most pumps and pump motors overpacking the ball bearings full of grease will result in （）
A. moisture emulsification of the bearing grease
B. insufficient circulation and overheating of the bearing
C. proper grease circulation to cool the bearing
D. sliding friction between balls and races
[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]Which of the following pumps is used where a relatively high pressure and small capacity are required?（）
A. Volute pump
B. Diffuser pump
C. Regenerative pump
D. All of the above
[单项选择]
Which of the following pumps will build up a bursting pressure or stall their motors if the discharge valves are closed?（）
(1) gear
(2) centrifugal
(3) screw
A. （1）and（2）
B. （1），（2）and（3）
C. （1）and（3）
D. （2）and（3）
[单项选择]Which of the listed pumps is NOT a positive displacement pump?（）
A. Centrifugal
B. Reciprocating
C. Gear
D. Rotary
[单项选择]
Which of the following pumps are self-priming, and can deal with liquid from a level below the pump? （）
(1) reciprocating
(2) rotary
(3) centrifugal
A. (1)only
B. (1)and (2)
C. (1),(2)and(3)
D. (2)and(3)
[单项选择]Which of the following types of hydraulic pumps would be used in a steering system?（）
A. Lobe
B. Screw
C. Radial piston
D. Volute
