以工业产权和非专利技术作价出资的比例一般不得超过项目资本金总额的( )。
A.50% B.20% C.10% D.30%
参考答案:B
The vegetables we ate for lunch ________ very good. They had been overcooked.
A.weren’t tasting
B.weren’t tasted
C.didn’t taste
D.haven’t tasted
可作为常用的效用评价指标是()和()。