消防员灭火防护胶靴在酸碱溶液中浸泡60h±2h后，物理机械性能无显著变化。
参考答案：错
A company, with a tax rate of 40% percent, sold a capital asset with a net book value of $500 000 for $570 000 during the year. Which of the following amounts will most likely be reported on their in their income statement for year related to the asset sale（）
A. $70000.
B. $92000.
C. $105000.
某企业生产日产品，属于可比产品，上年实际平均单位成本为100元，上年实际产量为 1800．件，本年实际产量为2000件，本年实际平均单位成本为98元，则本年B产品可比产品成本降低率为( )。
A．2%
B．2.22%
C．2.04%
D．2.27%
