单项选择题

常用的手工编程拟合计算方法有等间距法、（）、三点定圆法等。
A、行切法
B、等插补段法
C、圆心半径法
D、环切法

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答案：正确

单项选择题

Generally, revenue from sales should be recognized at a point when:
A、The product is available for sale to the ultimate consumer
B、The product is available for sale to the ultimate consumer
C、The entire amount receivable has been collected from the customer and there remains no further warranty liability
D、Control on goods or services transfer