Which of the following pH readings taken in engine coolant fall in the normal range?
A. 3.5
B. 6.0
C. 9.0
D. 13.5
Answer: C
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Usually, butt welds are made all the way along the length of the joint.
Answer the following statement true (T) or false (F)
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When joining PEX tubing, the PEX ring should be extended over the end of the tube to a maximum of _____
inch. A) 1/16 B) 1/8 C) 1/4 D) 1/2
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What is commonly done when a drop-in refrigerant is placed in operating equipment?
a. A crankcase heater is installed. b. The oil is replaced. c. A leak-detecting dye is added. d. The refrigerant piping is replaced.
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An example of a systemic poison is _____
A) Orthene B) Methyl bromide C) Rotenone D) Malathion
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