关于补体概念正确的是
A. 是存在于人血清及组织当中的一组具有酶活性的球蛋白
B. 是存在于脊椎动物血清及组织当中的一组具有酶活性的球蛋白
C. 是存在于人和脊椎动物血清及组织当中的一组具有酶活性的球蛋白
D. 是存在于人和脊椎动物正常新鲜血清及组织当中的一组球蛋白
E. 是存在于人和脊椎动物正常新鲜血清及组织当中昀一组具有酶活性的球蛋白
如何填写健康体检表中的“健康评价”和“健康指导”栏?
A company makes two products using the same type of materials and skilled workers. The following information is available:
Fixed costs relating to material handling amount to $100,000. The cost driver for these costs is the volume of material purchased.
General fixed costs, absorbed on the basis of labour hours, amount to $180,000.
Using activity-based costing, what is the total fixed overhead amount to be absorbed into each unit of product B (to the nearest whole $)?
A. $113
B. $120
C. $40
D. $105
Due to recent government incentives to encourage recycling, the standard price of recycled plastic was expected to reduce to $0·40 per kg. The actual price paid by the company was $0·42 per kg and 100,000 baskets were manufactured using 20,000 kg of recycled plastic.
What is the materials operational price variance?
A. $2,000 favourable
B. $1,600 favourable
C. $400 adverse
D. $320 adverse