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【单选题】
当主链由下列饱和单键组成时,其柔顺性的顺序为( )。A.
-C-O- > -Si-O- > -C-C-
B.
-Si-O- > -C-C- > -C-O-
C.
-Si-O- > -C-O- > -C-C-
D.
无
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