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【单选题】
Don't leave the room until you _____. [ ]A.
tell to
B.
are told to
C.
will be told to
D.
are being told to
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反馈参考答案：
举一反三
【单选题】The choice of the absorption or contribution approach affects the manufacturing cost per unit because the:
A.
a. manufacturing cost per unit is higher if the absorption approach is used
B.
b. manufacturing cost per unit is higher if the contribution approach is used
C.
c. manufacturing cost per unit is the same regardless of the approach
D.
d. manufacturing cost per unit is independent of the approach
【单选题】A unit cost is computed by:
A.
Dividing total cost by the number of units
B.
Adding variable cost to fixed cost
C.
Multiplying total cost by the number of units
D.
Dividing variable cost by the number of units
【单选题】The marginal social cost of a unit of pollution:
A.
is the additional cost imposed on society by that unit.
B.
is easy to calculate, since pollution produces costs.
C.
is often overestimated.
D.
remains constant as more of a good is produced.
【单选题】If the total cost of producing 10 units equals $90, and the average total cost of producing 11 units equals $8.75, then the marginal cost of the eleventh unit produced:
A.
is definitely greater than the marginal cost of producing the tenth unit.
B.
is definitely less than the marginal cost of producing the tenth unit.
C.
is less than the average total cost of producing ten units.
D.
is greater than the average total cost of producing ten units.
【多选题】下列关于睾丸间质细胞的描述,正确的是
A.
合成和分泌雄激素
B.
细胞体积大，常成群分布在生精小管之间的睾丸间质中
C.
细胞质嗜酸性，有分泌类固醇激素细胞的特点
D.
支持、保护和营养各级生精细胞
E.
参与构成血—睾屏障
【单选题】A unit cost is computed by:
A.
Multiplying total cost by the number of units
B.
Divided total cost by the number of units
C.
Dividing variable cost by the number of units
D.
Adding variable cost and fixed cost
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