HS采用详列商品的注释，使归类有了参照物，以便用类比的方法进行商品归类。 ( )
参考答案：错
Winthur Publishing Company invests $ 800000 in a printing press that will be depreciated on a straight-line basis over four years and will have a zero salvage value at the end of its life. Sales revenues, operating expenses, and net income for each year are shown in the table below.（）
A.$18.75
B.$15.75
C.$12.75
下列关于继承的哪项叙述是正确的 ( )
A．在java中允许多重继承
B．在java中一个类只能实现一个接口
C．在java中一个类不能同时继承一个类和实现一个接口
D．java的单—继承使代码更可靠
