题目

2mol氢气和1 mol氧气化合生成2 mol液态水，放出571.6kJ热量。能正确表示这一反应的热化学方程式是 A．2H2 + O2 → 2H2O + 571.6kJ B．2H2(g) + O2(g)→ 2H2O(g)+ 571.6Kj C．2H2(g) + O2(g) → 2H2O(l) + 571.6kJ D．2H2(g) + O2(g) → 2H2O(l) - 571.6kJ 答案：C .—Do you like coffee or milk? —Both. But I prefer coffee ____ milk. A. to    B. for    C. with     D. from