You heat a plastic pipe, soften it, shape it, and then let it cool. After it is hardened, you realize that you need to
bend the pipe at a greater angle. You reheat the pipe, but the pipe will no longer soften. The pipe you are
working with is most likely a _____ pipe.
A) thermoplastic
B) thermosetting
C) solid wall
D) cellular core wall
Answer: B
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Match the gas law with its properties.
A. P1 × V1 = P2 × V2 B. V1 / T1 = V2 / T2 C. PTOTAL = PSUBSTANCE 1 + PSUBSTANCE 2
Roughages and concentrates are fed together
Indicate whether the statement is true or false.
A cooling tower with its fan located in the air stream leaving the tower, drawing the air through the tower, is:
A) A forced-draft cooling tower. B) An induced-draft cooling tower. C) A hybrid-draft cooling tower. D) A natural-draft cooling tower.
Compression molding and vulcanization are the most common fabrication processes for thermosets.
Answer the following statement true (T) or false (F)