Look for doors that are made with no added ____ in glues or binders. Many standard composite doors will have high content, although some manufacturers now produce products without it.
A. FC
B. VR
C. MDF
D. UF
Answer: D
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In which of the following general groups are tungsten carbide and chromium electrodes classified?
A. Resistance to impact B. Resistance to severe abrasion C. Resistance to severe impact D. Resistance to moderate abrasion
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The major source of _____ is the water taken in by the plant
a. Oxygen c. Nitrogen b. Hydrogen d. Arsenic
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The ____ is the portion of the tread that projects beyond the riser.
A. rise B. run C. nosing D. baluster
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Which of the following represents the possible “tip” and “ring” wires of a telephone system?
A. Green and Red B. Black and Yellow C. Blue and White D. All the above
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