下列项目在盈亏平衡计算中,不属于固定成本的是( )。
A.计件工资
B.折旧费
C.无形资产及其他资产摊销费
D.办公费
参考答案:A
Yuan Longping, one of the greatest scientists in China, ______ as "father of hybrid rice". [ ]
A. is regarded
B. has regarded
C. is regarding
用黑盒技术测试用例的方法之一为
A.因果图
B.逻辑覆盖
C.循环覆盖
D.基本路径测试