说明环境规划与管理的主要内容，并归纳本书的基本框架。

由正投影得到的物体的投影图是原几何图形的（）。

A、形状

B、大小

C、剖视图

D、位置和形状

For nearly ten years,the Unified Modeling Language (UML) has been the industry standard for visualizing,specifying,constructing,and documenting the(1)of a software-intensive system.As the(2)standard modeling language,the UML facilitates communication and reduces confusion among project(3).The recent standardization of UML 2.0 has further extended the language's scope and viability.Its inherent expressiveness allows users to(4)everything from enterprise information systems and distributed Web-based applications to real-time embedded systems. 　　

The UML is not limited to modeling software.In fact,it is expressive enough to model (5)systems,such as workflow in the legal system,the structure and behavior of a patient healthcare system,software engineering in aircraft combat systems,and the design of hardware. 　　

To understand the UML,you need to form a conceptual model of the language,and this requires learning three major elements:the UML's basic building blocks,the rules that dictate how those building blocks may be put together,and some common mechanisms that apply throughout the UML.

空白（3）处应选择（）

A.investors

B.developers

C.designers

D.stakeholders

化脓性脑膜炎的脑脊液改变（）

A.白细胞数5×10⁶/L，淋巴细胞为主，蛋白0.3g/L，糖3.5mmol/L

B.白细胞数50×10⁶/L，淋巴细胞为主，蛋白0.8g/L，糖1.5mmol/L

C.白细胞数2000×10⁶/L，中性粒细胞为主，蛋白1g/L，糖1.5mmol/L

D.白细胞数50×10⁶/L，淋巴细胞为主，蛋白0.8g/L，糖3.5mmol/L

E.白细胞数5×10⁶/L，淋巴细胞为主，蛋白0.3g/L，糖2.5mmol/L

阅读下面的程序段：For a=1 To 2　For b=1 To a 　For C=b To 2　 　I=I + 1　　Next　NextNextPrint I执行上面的三重循环后，I的值为

A．4

B．5

C．6

D．9

下列是早期慢性肺源性心脏病的表现的是（）

A.肺气肿体征

B.活动后呼吸困难

C.颈静脉充盈

D.肺动脉高压

E.右心功能不全表现