22. The formula “
” should be a. Alkanes; b. Alkenes; c. Alkynes; d. Cycloalkane
(A) a or b
(B) b or c
(C)c or d
(D) a or d
(E) b or d
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統計: A(0), B(3), C(0), D(1), E(11) #2973576
統計: A(0), B(3), C(0), D(1), E(11) #2973576