試題詳解

5. Which of the following gases is/are present in the fuel obtained after coal gasification? I: octene gas； II: synthetic gas； IIl: methane gas； IV: mercaptan gas； V propane gas
(A) I and IV
(B) I and V
(C) I, II and IIl
(D) II, IV, and V
(E) II and Ill