The sharp v thread:
A) Has an included angle of 55 degrees
B) Is very durable and will take much abuse without damage
C) Is seldom used today
D) Does not fit or seal as close as most threads
C
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Evaporative cooling systems work by:
A) Evaporating refrigerant inside a component called an evaporator. B) Evaporating HFC refrigerants into the air, which reduces the temperature. C) Evaporating the heat out of the air which makes the heat disappear. D) Evaporating water, which reduces the temperature of the air.
The process of locating objects via radar requires the measurement of three coordinates: range, angle of azimuth, and angle of _____________
A. antenna curve B. energy transmission C. elevation D. echo signal
The oldest and simplest standard used in the cellular network is:
A) FDM B) TDMA C) AMPS D) CDMA
Which of the following is caused by the presence of slime-producing biologic organisms in the water in an HVAC system?
a. Increased water flow b. Inadequate heat transfer c. Excessive bleed-off d. Excessive cooling