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问题 填空题 案例分析题

下图是生态系统碳循环过程示意图，其中A、B、C、D组成生物群落。请据图分析回答：

在能量流动过程中，能量从B到A的传递效率大约为（）

答案

参考答案：10%--20%

单项选择题

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (6) of the technical requirements for the software product.

During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each (7) that it must meet. The starting point is usually a set of high-level requirements from the (8) that describe the project or problem.

In either case, the requirements definition team formulates an overall concept for the system and then defines (9) showing how the system will be operated, publishes the system and operations concept document, and conducts a system concept review (SCR).

Following the SCR, the team derives (10) requirements for the system from the high level requirements and the system and operations concept. Using structured or object-oriented analysis the team specifies the software functions and algorithms needed to, satisfy each detailed requirement.

10（）

A.detailed 

B.outlined 

C.total 

D.complete
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多项选择题

《期货公司管理办法》的制定目的包括（）。

A.规范期货公司的经营活动

B.加强对期货公司的监督管理

C.促进期货市场积极稳妥发展

D.保护客户的合法权益
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