29. Which of the following molecules contains a double bond?
(A) CO2
(B) NH4
(C) H2O
(D) CH3OH
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統計: 尚無統計資料
統計: 尚無統計資料
29. Which of the following molecules contains a double bond?
(A) CO2
(B) NH4
(C) H2O
(D) CH3OH