Water Supply Engineering

Average annual rainfall at any station is the average of annual rainfall over a period of_____.

  • A. 14 years
  • B. 21 years
  • C. 28 years
  • D. 35 years
Answer: Option D.
Explanation: 

IS 14665 gives details about elevators. It specifies the number, capacityof elevator and number of floors to be served.

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