( )，就是对自己的工作要专心、认真、负责任，为实现职业上的奋斗目标而努力。A．爱

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.

Its inherent expressiveness allows users to（）everything from enterprise information systems and distributed Web-based applications to real-time embedded systems.

A．model

B．code

C．test

D．modify

保函不属于授信业务。()

骨盆骨折最严重的并发症是（）

A.直肠损伤

B.膀胱损伤

C. * * 损伤

D.神经损伤

E.盆腔血管损伤

光滑水平面上两小球a、b用不可伸长的松弛细绳相连。开始时a球静止，b球以一定速度运动直至绳被拉紧，然后两球一起运动，在此过程中两球的总动量______(填“守恒”或“不守恒”)；机械能______(填“守恒”或“不守恒”)。