While the boiler is warming up, the drum vent must be kept open until there is about __ kPa pressure in the boiler

While the boiler is warming up, the drum vent must be kept open until there is about __ kPa pressure in the boiler

While the boiler is warming up, the drum vent must be kept open until there is about __ kPa pressure in the boiler




A. 512
B. 355
C. 290
D. 494
E. 175





Answer: E


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