Before opening the compressor crankcase to take an oil sample, you should:
A) Get the sample tube ready because the oil comes out very quickly under pressure.
B) Increase the crankcase pressure with nitrogen to at least 100 psig.
C) Position yourself directly in front of the drain port.
D) Valve off the compressor and recover the refrigerant down to 1—2 psig.
D
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A ____ is often used on outside intersecting planes by removing material at an angle to one of the planes.
A. round B. parameter C. chamfer D. dimension
The great majority of nitrogen (95 to 98%) in soils can be found in the form of ________
A) dissolved anions B) secondary minerals C) dissolved cations D) organic compounds E) primary minerals
A pillow block bearing failure that is caused by an undersized shaft is _____
a. thrust failure b. misalignment c. a broken cam d. electric arcing
Horses are used in programs of physical therapy for people with disabilities called ____________________.
Fill in the blank(s) with the appropriate word(s).