What does an evaporator pressure regulator do?
A) It will not allow the evaporator pressure to rise above its setpoint, even if the suction pressure is higher.
B) Evaporator pressure regulator is simply another name for thermostatic expansion valve.
C) It is used in place of a more traditional refrigerant expansion device.
D) It will not allow the evaporator pressure to drop below its setpoint, even if the suction pressure is lower.
Question 2
Why are air-acetylene, air MAPP, or air-propane torches preferred over oxyacetylene torches for soldering copper pipes?
A) Oxyacetylene temperatures can easily overheat the pipe.
B) They have smaller, more focused flames than oxyacetylene torches.
C) They all produce a much hotter flame than oxyacetylene torches.
D) Oxyacetylene torches cannot be used with solder because of the possibility of adverse chemical reactions.
a) Using a soft pillow rather than a hard bolster under the knees will reduce pressure on the back ...
A typical camshaft-driven high-pressure pump used to increase fuel pressure to 2,000 PSI or higher.
Measuring Pressure: Mercury Barometers
Apply oil or lotion to the entire leg with effleurage. Use light to medium pressure to warm ...
Warming effleurage to thigh muscles. Use reinforced palm over palm method to apply deeper pressure ...
Direct thumb pressure to a trigger point.