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【单选题】
药物被动转运的特点是A.
需耗能
B.
需载体
C.
有饱和抑制现象
D.
逆浓度差转运
E.
顺浓度差转运
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【简答题】What fees will be regarded as variable costs?（ ）
【单选题】In the short run, if average variable costs equal $6 and average total costs equal $10 and output equals 100, then total fixed costs equal______.
A.
$4
B.
$400
C.
16
D.
1600
【单选题】Which of the following are variable costs of production?
A.
the wages paid to non-salaried employees
B.
the cost of wood used to produce furniture
C.
the cost of electricity that powers the lighting and computer systems in an office building
D.
All of the above are variable costs of production.
【单选题】Which of the following costs are inventoried when using variable costing?
A.
Variable marketing costs
B.
Variable manufacturing costs
C.
Fixed manufacturing costs
D.
Both (a) and (c) are correct
【单选题】Which of the following statements is TRUE about fixed and variable costs?
A.
Both costs are constant when considered on a per-unit basis.
B.
Both costs are constant when considered on a total basis.
C.
Fixed costs are constant in total and variable costs are constant per unit.
D.
Variable costs are constant in total and fixed costs are constant per unit.
【单选题】Total variable costs:
A.
are costs associated with short-run fixed capital.
B.
are so named because they vary from firm to firm within an industry.
C.
increase as production increases.
D.
decrease as production increases.
【单选题】Variable costs:
A.
Are always indirect costs
B.
Include most personnel costs and depreciation on machinery
C.
Increase in total when the actual level of activity increases
D.
Can always be traced directly to the cost object
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