原料气中水蒸气含量增加，不利于甲烷化反应进行，并影响催化剂的活性，所以原料气中的水蒸气含量越少越好。
参考答案：对
What of the following statements is NOT true about Chuck Feeney a. He is mean toward other people. b. He lives a very economical life. c. He is charitable. d. He is rich.
抗肠蠕虫的旨选药是( )
A．左旋咪唑B．甲苯达唑C．喹碘仿D．氯喹E．替硝唑
