【正文】 nto monomer of first layer weak between, the monomer first layer weak between respectively as this monomer of equipment room, work switch do level joint Hou respectively wiring to buildings of Office regional, wiring along the layer shaft points line box Hou along slot laying in the layer ceiling, to end socket line wear plating zinc tube dark enough Yu wall Board within. 4) main distribution frame between devices (BD) located in the medical building information work center machine room, plete internal LAN connection and external broadband work connections, providing a variety of information services to the hospital. The device as a whole hospital work and external work core switch. 5) management on work areas, equipment, into the line between the wiring devices, cable and information outlet module identifies and records according to a certain pattern, such as, to facilitate munication plete the connection lines, line management of 前 言 隨著世界經(jīng)濟(jì)全球化的不斷推進(jìn)，知識(shí)經(jīng)濟(jì)、信息經(jīng)濟(jì)的深入發(fā)展，中國(guó)經(jīng)濟(jì)與國(guó)際化接軌的速度越來(lái)越快，壓力越來(lái)越大。 losses not included, each about 15 meters. Metal line slot, and metal line t ube of specifications and the length calculation ceiling within dark enough metal line slot, line slot inside cable of fill rate not should is greater than 60%。 The twistedpair cable box you want = 49500 247。 Office building of information: a minimum of 26 meters, the longest was 92 meters, L=[(28+92)/2]++1= m。 L2: other allowances S1: minimum horizontal cable length。 in the uniform distribution. Main connection (MDF) located on the production floor of the second floor Center room (work equipment), by telephone calls outside the telephone Office is responsible for introducing the main wiring in the building, switching locations are also located in the main terminal, and the telephone Office is responsible for providing the appropriate size adapter patch panels and electrical protection unit. (Shuttle bus) wiring (IDF) set up in the workshop on the second floor of the building, located in the District of weak electrical cabis (well). Engine room placed inside the Cabi, IDF placed a standard 40U cabis for installation of work and wiring devices, management puter and telephone information. Cabi distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computer information management, admin area using the jumpers, which uses private RJ45RJ45 soft jumpers for work devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Twisted length Centre room is located on the second floor, outward radiation of each line (except some points may exceed) does not exceed 100 metres in length, all information for the various floors all rooms (distribution Cabi) unified management. District workshop building distribution lines (IDF) via fiber optic cables connected to the total room cabis. Fiber length were: workshops two IDF: total more than 1200 square meters, double the number of strands can be calculated by multiplying the average length of the number of information points are. Average level of each length of cable: L=[(S1+S2)/2]+L1+L2 l: average length of cable。 (9) car manufacturing enterprise car performance detection and debugging。 (7) car transport enterprise car using management。 (5) car maintenance enterprise or car sales and aftersales service integration Enterprise car accessories management。 (3) car maintenance enterprise or car sales and aftersales service integration enterprise business or production management。 Have the necessary professional knowledge and on the basis of scientific literacy, familiar with the vehicle use and maintenance of policies and regulations of the State, focusing on mastering basic abilities and skills of professional practical work in the field, have strong working ability. Professional orientation training in maintenance, repair, testing, technology and management, and maintenancemanagement professional talents with high quality skills. Through systematic course of working process of contextualized teaching, knowledge, skills, values education as a whole, so that students in professional petence, ability, social skills andhaveimproved, familiar with the automobile detection and maintenance technology, to carry out vehicle maintenance, repair, testing, fault diagnosis and repair, automotive management and other related work. II, and career oriented and certificate 1. career oriented this professional students can in car using and maintenance class enterprise engaged in car performance detection, and car maintenance, and car using management, work, can engaged in of career post has: (1) car maintenance enterprise or car sales andaftersales service integration Enterprise car electromechanical maintenance。 line tube line cable of fill rate General not should is greater than 50%, currently popular of φ 20MM line tube cancloth put 45 root Super five class line, φ 25MM line tube can cloth put 8 10 root Super five class line. In accordance with the standard method of bridge design, according to the diameter of the horizontal line to determine the capacity of the bridge: bridge the crosssectional area is equal to the sum of the horizontal sectional area X3, according to number of twisted, vertical orientation using 150x100 ... IDF placed a 20U standard wall cabis, wiring devices and to install a work, management pointinformation. Cabi distribution frame are made of Super five RJ45 patch panel horizontal twisted pair connections. Computerinformation management, admin area using the jumpers, which uses private RJ45RJ45 soft jumpers for work devices with jumpers hopping between all switches, changes, expansion and maintenance were done quickly in the wiring closet. Data systems through patch panels and work device connected to the switch. environmental requirements in order to make the connection betweenthe primary connection between the cable and equipment are in good working condi