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问题 单项选择题

下列关于要约的表述中，正确的是( )。

A．要约是相约会面

B．要约与要约邀请是同一含义
C．要约的内容不须具体确定
D．要约应表明相对人承诺即受其拘束

答案

参考答案：D

单项选择题

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.

and documenting the （）of a software-intensive system

A．classes

B．components

C．sequences

D．artifacts
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多项选择题

驾驶出租汽车发生紧急情况向其他交通参与者发出警告信号时，可采取的措施有（）。

A.开启危险报警闪光灯

B.变换远近光灯

C.连续鸣喇叭

D.必要时打手势
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