Which type of oakum is used for water mains and ductile iron piping?
A. black oakum
B. brown oakum
C. yellow oakum
D. white oakum
Answer: D
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Indicate whether the statement is true or false
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A) Add extra power to the battery B) By downshifting the transmission C) By slowing down the exhaust D) By forcing more air-fuel mixture into the engine
In a time of flight ultrasonic flow meter, the difference between the transmitted and received frequencies become __________ as the velocity of the fluid increases.
A. smaller B. greater
When moisture is present in a refrigeration system, it will react with the refrigerant and the oil to form ____.
A. carbon dioxide B. acid C. carbon monoxide D. all of the above