【简答题】(14分) 甲醇被称为2l世纪的新型燃料,工业上通过下列反应Ⅰ和Ⅱ,来制备甲醇。 (1)将1.0 mol CH 4 和2.0 mol H 2 O(g)通入反应室(容积为100L),在一定条件下发生反应:CH 4 (g)+H 2 O(g) CO(g)+3H 2 (g)……Ⅰ,CH 4 的转化率与温度、压强的关系如右图所示: ①已知100℃时达到平衡所需的时间为5min,则用H 2 表示的平均反应速率...
【判断题】If there is an increase in supply accompanied by a decrease in demand for coffee, then there will be a decrease in both equilibrium price and quantity in the market for coffee.
【单选题】变压器在( )时,效率最高。 A.额定负载下运行 B.空载运行 C.轻载运行 D.超过额定负载下运行
【单选题】Which of the following will definitely occur when there is an increase in demand for and a decrease in supply of milk?
A.
an increase in equilibrium quantity
B.
a decrease in equilibrium quantity
C.
a decrease in equilibrium price
D.
an increase in equilibrium price.
【简答题】A decrease in supply generally________price and ________quantity demanded.