对干熄炉环形烟道出口部位的耐火砖有严格的要求，下列说法正确的是（）。A.灰缝厚度应控

For nearly ten years, the Unified Modeling Language (UML) has been the industry standard for visualizing, specifying, constructing, and documenting the (71) of a software-intensive system. As the (72) standard modeling language, the UML facilitates communication and reduces confusion among project (73) . The recent standardization of UML 2.0 has further extended the language's scope and viability. Its inherent expressiveness allows users to (74) 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 (75) 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.

（75）处填（）。

A．non-hardware

B．non-software

C．hardware

D．software

关于培养基定义，哪项是错的（）

A.是细菌的人工养料

B.根据各细菌需要组合而成的混合养料

C.病原菌都能在培养基上生长

D.生长表现与产物是鉴定细菌的依据

E.不同的培养基所含成分不同

下列地形区中属于北方地区的是（　　）

A．四川盆地

B．云贵高原

C．华北平原

D．长江中下游平原

下面是关于目前流行的PC机中PCI总线的叙述，其中正确的是( )。

A．为提高总线速度，PCI总线和VESA总线一样，常将其数据线和地址线与CPU相关引脚直接相连

B．PCI总线的早期版本和VESA总线一样，数据线为32位

C．PCI总线和VESA总线一样，它们都不是独立的总线，其性能指标与系统采用的CPU紧密相关

D．与ISA总线是在原PC/XT总线的基础上经过扩充修改而成一样，PCI总线是在原ISA总线的基础上经过扩充修改而成的

把公安机关置于党的绝对领导之下并发挥其职能作用，也是体现党的执政能力的重要方面。 ( )