在规定的安全使用范围内，桅杆中心线与地面夹角应是（）。A．不小于80度 B．不小于6

从1，3，5，7，9中任取三个数字，从0，2，4，6，8中任取两个数字，组成没有重复数字的五位数，共有______个？

经济学观点认为（）是城市经济组织的基础。

A、生产资料所有制

B、劳动分工

C、分配制度

D、经济制度

下列行为人所谋取的利益，哪些不是行贿罪中的“不正当利益”( )

A．甲向某国有公司负责人米某送2万元，希望能承包该公司正在发包的一项建筑工程

B．乙向某高校招生人员刘某送2万元，希望刘某在招生时对其已经进入该高校投档线的女儿优先录取

C．丙向某法院国家赔偿委员会委员高某送2万元，希望高某按照国家赔偿法的规定处理自己的赔偿申请

D．丁向某医院药剂科长程某送2万元，希望程某在质量、价格相同的条件下优先采购丁所在单位生产的药品

“包装种类”栏应填（）。

A．纸箱

B．木箱

C．裸装

D．此栏为空

In the open systems interconnection (OSI) reference model, "layer" means one of seven conceptually complete, (71) arranged groups of services, functions, and protocols, that extend across all open systems.

Application layer provides means for the application (72) to access the OSI environment. Presentation layer provides for the selection of a common syntax for representing data. (73) layer provides the means necessary for cooperating presentation entities to organize and synchronize their dialog and to manage their data exchange. Transport layer provides a reliable end-to-end data transfer service. Network layer provides for the entities in the transport layer the means for transferring blocks of data, by (74) and switching through the network between the open systems in which those entities reside. Data link layer provides services to transfer data between network layer entities. Physical layer provides the mechanical, electrical, functional, and procedural means to establish, maintain and (75) physical connections for transfer of bits over a transmission medium.

（74）处填（）。

A．passing

B．linking

C．searching

D．routing