If an electric boiler has a power input more than 1100kW, how many pressure relief valves should it have?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: B
If an electric boiler has a power input more than 1100kW, how many pressure relief valves should it have?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: B