2 警用防彈背心用的防彈纖維 Kevlar 是屬於那一類的纖維?
(A)Polyamide
(B)Polyethylene terephthalate
(C)Aramids
(D)Carbon fiber
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統計: A(74), B(126), C(382), D(75), E(0) #678471
統計: A(74), B(126), C(382), D(75), E(0) #678471