The hydrostatic test pump is normally connected to the piping system by _____ connections coming out of the
discharge side of the pump.
a. socket-welded
b. butt-welded
c. screwed
d. flanged
c
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The primary control for all HVACR functions in a direct digital control (DDC) system is
A) Not necessary. DDC systems do not use primary controllers B) A computer C) A multistage thermostat D) A relay pack
A boring tool that is not centered over the hole being bored:
A) Will cause more bar deflection on the side with the heavier cut B) Will result in uncontrolled vibrations C) Causes more tool wear on one side D) Requires a variable feed rate
The amount of outside air introduced can be controlled using:
A) A CO sensor. B) An O2 sensor. C) A CO2 sensor. D) An N2 sensor.
____________________ colors contrast the most and consist of colors that are opposite each other on the color wheel.
Fill in the blank(s) with the appropriate word(s).