【判断题】Public warehouses are used by firms that can justify the costs of having their own facilities, or prefer making a commitment to owning and operating their own facilities.
【简答题】科学家预言:未来最理想的燃料是乙醇。将绿色植物的秸杆(主要成分是纤维素,化学式为(C 6 H 10 O 5 )。在适当催化剂的作用下与水发生反应生成葡萄糖C 6 H 12 O 6 。再将葡萄糖在一定条件下(有催化剂存在)发酵转化成乙醇C 2 H 5 OH和CO 2 。乙醇可用作燃料,在氧气中燃烧生成水和二氧化碳并放出热量。试写出第二、三步转化的化学方程式。 (1) ; (2) 。