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Unformatted text preview: ________ to get the piece out. (A) easier (B) more difficult (5) Both steels and cast iron are iron-carbon alloys. (A) True. (B) False. (6) Both brasses and bronzes contain copper. (A) True. (B) False. (7) Generally speaking, ceramic materials have lower thermal conductivity than metals. (A) True. (B) False. (8) Generally speaking, metals have lower thermal conductivity than plastics. (A) True. (B) False. (9) Generally speaking, the melting point of ceramics is _______ than that of metals. (A) lower (B) higher. (10) In the past three decades, US composites shipment has declined. (A) True. (B) False....
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- Spring '07