在光滑水平地面上有两个相同的弹性小球A、B，质量都为m.现B球静止，A球向B球运

For nearly ten years, the Unified Modeling Language (UML) has been the industry standard for visualizing, specifying, constructing, and documenting the （） of a software-intensive system. As the （） standard modeling language, the UML facilitates communication and reduces confusion among project （）. The recent standardization of UML 2.0 has further extended the language’s scope and viability. Its inherent expressiveness allows users to （） 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 （） 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.

In fact, it is expressive enough to model （） 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.

A．non-hardware

B．non-software

C．hardware

D．software

男，67岁，吸烟史45年，既往有肺结核病史。近1个月低热、咳嗽、咳痰，咯血两次，常规抗感染治疗后复查胸部CT，右上肺病灶如图。

可能的诊断有哪些（）

A.肺结核

B.念珠菌感染

C.大叶性肺炎实变期

D.周围性肺癌

E.耐药菌性肺炎

后结构主义批评

属于基础分泌的是（）

A.睑板腺

B.副泪腺

C.结膜杯状细胞

D.Zeis腺

E.以上均是

下列天体系统中，不包括地球的是（）

A.银河系

B.总星系

C.河外星系

D.太阳系