40.市面上常見的 PE 透明塑膠袋,其單體的化學結構為何?
(A) H2C = CHCH3
(B) H2C = CH2
(C) H2C = CHCl
(D) H2C = CH(CN)
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統計: A(1), B(13), C(0), D(1), E(0) #2482184
統計: A(1), B(13), C(0), D(1), E(0) #2482184