Read the vernier protractor scale in the accompanying figure.
A. 20o15'
B. 20o20'
C. 21o15'
D. 21o20'
Answer: A
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What two functions does the evaporator of a domestic refrigerator perform?
A. Filters and cools the air. B. Absorbs and dissipates heat. C. Humidifies and cools the air. D. Dehumidifies and cools the air.
Live centers are:
A) Hardened B) Hardened and annealed C) Made with carbide inserts D) Soft material
What are right-handed aviation snips used for?
A) Making cuts in sheet metal that curve to the left B) Making long, straight cuts in sheet metal C) Making cuts in sheet metal that curve to the right D) Making cuts in sheet metal in any direction
Mass measures:
A) How much matter an object has. B) Only the density of a solid. C) Only the specific gravity of a liquid. D) Only the specific volume of a substance.