BPP P2 第
111 、 112 页有关 R&D Project 2 的折旧额为什么是 90k？（Deferred
R&D b/f 1.1.X8 —450K，
commercial production started during the year. Sales were 20k units in
20X8 and future sales are expected to be: 20X8 30k units; 20X9 60k units; 20Y0
40k units; 20Y1 30k units there are no sales expected after 20Y1.）
