【简答题】I.(1)在一密闭的2L的容器里充入8mol SO 2 和4mol 18 O 2 ,在一定条件下开始反应:2SO 2 (g)+O 2 (g) 2SO 3 (g),2min末测得容器中有7.2mol SO 2 。试回答: ① 反应后 18 O原子存在于哪些物质中____; ② 2min末SO 3 的浓度________________________; ③ 用O 2 的浓度变化表示该时间段内的化学反...
【单选题】Under true lease, the company or the bank will hold the title to the facilities, receive tax credit if there is any, sell facilities to the user at a bargain price when the lease expires.
【单选题】Under conditional lease, the company or the bank holds the title, takes the investment credits and depreciation expenses, and sells or releases the facilities when the lease expires.