单项选择题

Which of the following types of hydraulic pumps would be used in a steering system?()

A.Lobe
B.Screw
C.Radial piston
D.Volute

<上一题 目录 下一题>
热门 试题

单项选择题
Which of the following statements is true concerning centrifugal pumps?()

A.They are particularly suited for pumping high viscosity fluids
B.They are started with the discharge valve opened
C.The flow of liquid is developed by imparting energy due to the rotation of an impeller
D.They are always mounted in a horizontal position

单项选择题
The temperature of the refrigerant in the evaporator coil depends mostly upon the ().

A.refrigerant pressure in the evaporator
B.cooling water temperature to the condenser
C.heat load in the refrigerator compartment
D.solenoid valve in the liquid line

相关试题
  • An internal bypass is provided on ...
  • A grease gun is generally used to...
  • Thermostatic expansion valves can be...
  • The amount of fluid friction or in...
  • The major source of chemical contam...