系统分析阶段主要任务是明确系统需求,下列活动中,( )不属于需求分析的范畴。A....

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【单选题】

系统分析阶段主要任务是明确系统需求,下列活动中,( )不属于需求分析的范畴。

根据系统需求识别和确认系统功能

针对系统特点，考虑并确定数据库产品、开发平台和程序设计语言

将所收集的用户需求编写成文档和模型

了解实际用户任务和目标以及这些任务所支持的业务需求

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参考答案：

举一反三

【单选题】参与血一睾屏障构成的细胞是

睾丸间质细胞

T细胞

B细胞

巨噬细胞

睾丸支持细胞

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【单选题】The choice of the absorption or contribution approach affects the manufacturing cost per unit because the:

a. manufacturing cost per unit is higher if the absorption approach is used

b. manufacturing cost per unit is higher if the contribution approach is used

c. manufacturing cost per unit is the same regardless of the approach

d. manufacturing cost per unit is independent of the approach

查看完整题目与答案

【单选题】The opportunity cost of a one-unit increase in an activity

is greater than the marginal benefit.

is called rational cost.

decreases as you do more of it.

is called marginal cost.

is measured by what the person is willing to give up to get one more unit of the activity.

查看完整题目与答案

【判断题】理想信念是精神上的钙,没有崇高的理想信念,就会导致精神上的“软骨病”( )

正确

错误

查看完整题目与答案

【单选题】A unit cost is computed by:

Dividing total cost by the number of units

Adding variable cost to fixed cost

Multiplying total cost by the number of units

Dividing variable cost by the number of units

查看完整题目与答案

【单选题】The marginal social cost of a unit of pollution:

is the additional cost imposed on society by that unit.

is easy to calculate, since pollution produces costs.

is often overestimated.

remains constant as more of a good is produced.

查看完整题目与答案

【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:

is definitely greater than the marginal cost of producing the tenth unit.

is definitely less than the marginal cost of producing the tenth unit.

is less than the average total cost of producing ten units.

is greater than the average total cost of producing ten units.

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【单选题】睾丸间质细胞的主要生理功能是

营养和支持生殖细胞

产生精子

分泌雄激素

分泌雌激素

构成血睾屏障

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【多选题】下列关于睾丸间质细胞的描述,正确的是

合成和分泌雄激素

细胞体积大，常成群分布在生精小管之间的睾丸间质中

细胞质嗜酸性，有分泌类固醇激素细胞的特点

支持、保护和营养各级生精细胞

参与构成血—睾屏障

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【单选题】男性,15岁。双侧阴囊内空虚。B超检查:双侧睾丸下降不全,睾丸位于腹腔内。睾丸的内分泌功能是由睾丸间质细胞和支持细胞完成的,支持细胞的功能不包括

支持生精作用

营养生精作用

分泌抑制素

产生精子

构成血睾屏障

查看完整题目与答案

相关题目：

查看完整题目与答案

【单选题】The choice of the absorption or contribution approach affects the manufacturing cost per unit because the:

a. manufacturing cost per unit is higher if the absorption approach is used

b. manufacturing cost per unit is higher if the contribution approach is used

c. manufacturing cost per unit is the same regardless of the approach

d. manufacturing cost per unit is independent of the approach

查看完整题目与答案

【单选题】The opportunity cost of a one-unit increase in an activity

is greater than the marginal benefit.

is called rational cost.

decreases as you do more of it.

is called marginal cost.

is measured by what the person is willing to give up to get one more unit of the activity.

查看完整题目与答案

【判断题】理想信念是精神上的钙,没有崇高的理想信念,就会导致精神上的“软骨病”( )

正确

错误

查看完整题目与答案

【单选题】A unit cost is computed by:

Dividing total cost by the number of units

Adding variable cost to fixed cost

Multiplying total cost by the number of units

Dividing variable cost by the number of units

查看完整题目与答案

【单选题】The marginal social cost of a unit of pollution:

is the additional cost imposed on society by that unit.

is easy to calculate, since pollution produces costs.

is often overestimated.

remains constant as more of a good is produced.

查看完整题目与答案

【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:

is definitely greater than the marginal cost of producing the tenth unit.

is definitely less than the marginal cost of producing the tenth unit.

is less than the average total cost of producing ten units.

is greater than the average total cost of producing ten units.

查看完整题目与答案

查看完整题目与答案

【多选题】下列关于睾丸间质细胞的描述,正确的是

合成和分泌雄激素

细胞体积大，常成群分布在生精小管之间的睾丸间质中

查看完整题目与答案

查看完整题目与答案

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