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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What is a major disadvantage of using plastics in tool design?
What will be an ideal response?
____________________ is the time during which gas flows to clear out any air in the nozzle or surrounding the weld zone.
Fill in the blank(s) with the appropriate word(s).
In 1956, when Hungary revolted against continued domination by the Soviet Union, the United States under Dwight Eisenhower
A. sent money to the rebels. B. quickly recognized the new Hungarian government. C. refused to admit any Hungarian refugees and declined to provide military assistance to the anticommunist Hungarian rebels. D. gave only outdated military equipment to the Hungarian freedom fighters. E. did nothing to help to defeat the communists.
What valve must be front seated while the air conditioning is running in order to perform a low side pump down?
A. Discharge check valve B. Suction service valve C. The discharge check valve D. The receiver outlet valve