What is a multiple vacuum?
What will be an ideal response?
Multiple evacuation is several short vacuums in succession that are broken in between with dry nitrogen. The nitrogen absorbs and/or dislodges moisture in the system, making it easier to remove on subsequent evacuations.
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It is relatively easy to move an electron from the valence ring of a conductor
Indicate whether the statement is true or false
How many wall ties are needed for a job requiring 20,750 engineered-size bricks if the spacing of ties is 24" x 16"? Round the answer to the nearest whole number.
What will be an ideal response?
Bode plots use straight-line segments that are called __________
A. asymptotes B. transfer functions C. lead networks D. pass bands
What is the common name or number used for the hydro-fluorocarbon (HFC) refrigerant used in automotive refrigerant systems today?
What will be an ideal response?