ABSA: 4th Class Part B - Comprehensive Exam 1 Latest Update Graded A+
Temporary hardness in feedwater is caused by: Select one: a. Magnesium sulphate b. Calcium carbonate c. Magnesium bicarbonate d. Sodium nitrate c What is the recommended boiler water pH for wet layup? Select one: a. 10 b. 12 c. 7.5 d. 7 aA photoelectric flame scanner: Select one: a. Produces a steady voltage signal b. Requires a clear line of sight to the flame c. conducts current through the flame d. uses a pilot-stat b Heavy oil recovered using SAGD or CSS is properly referred to as Select one: a. bottoms b. crude c. tar d. bitumen d
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