40. Only the _________ tautomeric form of ribose exists in RNA structure?
(A) α-pyranose
(B) β-pyranose
(C) α-furanose
(D) β-furanose
(E) all of the above.

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統計: A(0), B(2), C(0), D(4), E(0) #3187951

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1. 題目解析 題目詢問的是在RNA結...
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