___________________ occurs on U-joint trunnion surfaces when surface fatigue causes grooves to wear into a surface.
A. Galling
B. Spalling
C. Brinelling
D. Pitting
Answer: C
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In the past, heat stabilizers were compounds based on ____ and cadmium but these metals posed environmental and health concerns. ?
A. ?silver B. ?nickel C. ?mercury D. ?lead
The best tool for defrosting an evaporator coil is a knife.
Answer the following statement true (T) or false (F)
Answer the following statement(s) true (T) or false (F)
1.An architect is a qualified person who creates and designs drawings for a residential construction project. 2.Sheathing is the building skeleton that provides the structural framework of a house. 3.A sill is a length of lumber that sits on top of the foundation and provides a place to attach the floor joists. 4.Rafters are the parts of a house that form the vertical framework for the walls. 5.A circle with a dot in the middle is the standard electrical symbol for a duplex receptacle.
In 1948, what company invented the bipolar junction transistor (BJT), which revolutionized the electronics industry?
A. General Electric B. Bell Laboratory C. Code Blue Corporation D. NASA