7. Which of the following pump is sucessfully used for lifting water to the boilers?
A. Reciprocating pump
B. Air-lift pump
C. Jet pump
D. Centrifugal pump
7. Which of the following pump is sucessfully used for lifting water to the boilers?
A. Reciprocating pump
B. Air-lift pump
C. Jet pump
D. Centrifugal pump