operator是运算符重载时必须使用的关键字，它和被重载的运算符连在一起，作为运算

集合A={-1，0，1}，B={y|y=cosx，x∈A}，则A∩B=（　　）

A．{0}

B．{1}

C．{0，1}

D．{-1，0，1}

土地使用者经出让方和市、县人民政府城市规划行政主管部门意，改变原土地使用权出让合同约定的土地用途，（　）。

A．其土地使用权出让金随之相应调整

B．新用途的土地使用权出让金大于原用途的土地使用权出让金的，土地使用权出让金可做相应调整

C．新用途的土地使用权出让金小于原用途的土地使用权出让金的，土地使用权出让金不做调整

D．其土地使用权出让金由出让方和受让方协商确定

出现下列哪种情况时，应怀疑腹外疝发生绞窄（）

A.疝突出后，停止排气排便

B.腹外疝不能还纳并伴有腹部不适

C.腹外疝发生嵌顿后出现腹痛

D.疝嵌顿数小时后，局部压痛并略显红肿

E.以上都不是

Due to a constantly (66) environment, a poor understanding of the user’s needs and preferences, as well as a (67) of willingness to modify. (68) organizational structures and decision models, the full economic potential of Web Information Systems (WIS) has not been realized by now. The data object types of the (69) meta model, the Extended World Wide Web Design Technique (eW3DT), provide hypertext designers (70) a conceptual, user-centric framework and graphical notation for the construction of both, (71) and customized models, during the software development (72) of commercial WIS. A reference model as a normative concept represents an abstraction of a (73) company, its functional units, or its Web Information System and is intended to streamline the design and implementation of complex applications at (74) costs. As precondition for pursuing a partial globalization strategy,eW3DT (75) between technical and content-specific responsibilities for designing, implementing, and maintaining WIS.

A．of

B．in

C．to

D．with

用的钛管冷却器有（）和（）钛列管冷却器两种类型。