The primary source of heat for a year-round packaged air conditioner is _____
a. electricity
b. natural gas
c. hot water
d. steam
b
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____________________ marks are deep, vertical scratches on the skirt of the piston.
Fill in the blank(s) with the appropriate word(s).
Si se necesitan andamios o escaleras para instalar el aislamiento de tubería, es necesario ________.
a. contar con un capataz y un mecánico. b. contar con un carpintero. c. contar con un equipo de dos personas. d. contar con un trabajador de aislamiento
Always perform a visual inspection of a pump for problems _____
A) at the end of the shift B) once per week C) at the beginning of the shift D) when the pump is operating at normal temperature
When making GTAW V-groove welds on aluminum plate, clean each completed weld with a(n) _____
a. bastard file b. chipping hammer c. aluminum wire brush d. stainless-steel wire brush