The discharge flow of a reciprocating pump is （）.
The （） pump discharges a nearly constant amount of liquid regardless of pressure.
Most pump manufacturers recommended that the discharge piping for centrifugal pumps be （）.
The discharge rate or capacity of a centrifugal pump will vary directly as the （）.
The pressure head of a pump is given in the unit of （）.
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
（）uses one or two high pressure pumps for all the cylinders with one more standby, while（）have a separate high-pressure pump for each cylinder.
The pressure of a liquid leaving the pump can be referred to as the （）.
Which of the following will be the advantage of a centrifugal pump as compared with a reciprocating pump?（） (1) Its discharge is continuous (2) It has no internal valves (3) Upon accidental closing of discharge valve, excessive pressure will not build up
To maintain design discharge pressure from a centrifugal pump, the design clearance must be maintained between the （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
Gear pumps are （） type because they discharge a near constant amount of liquid regardless of pressure.
If a bilge pump failed to build up discharge pressure, you should check for （）.
If a large difference exists between the compressor discharge pressure and the pressure corresponding to the existing condensing temperature in a refrigeration system, you should（）.
In （） pumps a closed discharge valve will cause bursting discharge pressure.
Which of the following terms is used to identify the pressure of the liquid entering a pump?（）
When starting a centrifugal pump, the discharge valve should be （）.
The （） discharge a nearly constant amount of liquid regardless of pressure.
The terminal indicates to you that they are going to use a booster pump to assist the discharging operation. You start the discharge，and in a few minutes the pressure drops sharply. This could be a result of the（）.
When the relief valve opens it discharges high pressure refrigerant vapor to the （）.
The pressure head of a water pump is given in the unit of （）.
The discharge side of every fire pump must be equipped with a（）.
When the relief valve is used as a constant pressure valve, it is connected to the outlet of the hydraulic pump to ensure that the outlet pressure of the hydraulic system (pump) is constant.
