20. What splitting pattern is observed in the proton NMR spectrum for the underlined hydrogens? CH3OCH2CH2OCH3
(A) Singlet
(B) Doublet
(C) Triplet
(D) Quartet
(E) Septet.

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統計： A(1), B(0), C(2), D(0), E(0) #2823984

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#6024316
What splitting patte...

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