At what pressure range does the technician valve off the vacuum pump when evacuating to a deep vacuum?
A) 200 to 100 microns.
B) 300 to 100 microns.
C) 300 to 200 microns.
D) 500 to 300 microns.

Question

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The Answer of At what pressure range does the technician valve off the vacuum pump when evacuating to a deep vacuum?
A) 200 to 100 microns.
B) 300 to 100 microns.
C) 300 to 200 microns.
D) 500 to 300 microns.

At What Pressure Range Does the Technician Valve Off the Vacuum