30. What splitting pattern is observed in the proton NMR spectrum for the indicated hydrogens?
 
(A) Singlet
(B) Doublet
(C) Triplet
(D) Singlet of singlet
(E) Multiplet

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統計: A(8), B(2), C(13), D(0), E(0) #1074576

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#4001893
很簡單。。。。。。。。。。。。 請先標...
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