A.塑料、合成纤维和合成橡胶都属于合成材料 |
B.聚氯乙烯可制成薄膜、软管等,其单体是CH2 = CHCl |
C.合成酚醛树脂的单体是苯酚和甲醇 |
D.合成顺丁橡胶( )的单体是CH2=CH—CH=CH2 |
A.CH3CH2CH2CH2CH3和CH3CH(CH3)2 |
B.CH2=C(CH3)2和CH3CH2CH=CH2 |
C.CH3CH2OH和CH3OCH3 |
D.CH3CH2CH2COOH和CH3COOCH2CH2 |
A.C2H4 | B.C3H8 | C.C4H8 | D.C4H10 |
A.CH4 | B.C2H6 | C.C2H4 | D.C2H2 |
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