题目

  --Jim isn't responding to my email requests to send over the copy of contract.    ______ . Maybe he's just busy. A. Oh, he's so rude        B. That's ridiculous        C. It's wrong        D. Well, remail him 答案：D硫酸与氢氧化钠反应的方程式为：H2SO4 + 2NaOH ==== Na2SO4 + 2H2O，此反应属于（     ） A．化合反应             B．分解反应       C．置换反应      D．复分解反应