Special training and certification is required before using any kind of _____
a. powder-actuated fastening tool
b. electrically powered tool
c. pneumatic nail or screw system
d. hydraulic lift or press tool
a
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Cup depths for fittings used for brazing are _____ than those for soldering.
a. longer b. shorter c. wider d. larger
Which nation successfully repulsed an Italian invasion in October 1940?
a. Albania b. Turkey c. Greece d. Yugoslavia
What input sensor is found in the filter section?
A) Mixed-air temperature sensor B) Filter moisture-sensing capillary C) Filter status switch D) Low-temperature thermostat
How can air be removed from a newly installed ground loop?
A) By purging the loop with nitrogen before connecting it to the system B) By adding low-toxicity antifreeze to the system C) By running water through the loop after connecting it to the system D) By temporarily connecting the purge unit