题目内容
In data communication, data link is those parts of two data terminal equipments that are controlled by a protocol along with the (71) data circuit, which together enable data (72) . So-called protocol means, in short, a set of rules that determines the behavior of functional units in achieving communication.Data circuit, however, consists of a pair of (73) transmission channels that provides a means of two-way data transmission. Between data switching exchanges, the data circuit may or may not include data circuit-terminating equipment (DCE), depending on the type of (74) used at the data switching exchange. Between a data station and a data switching exchange or data concentrator, the data circuit includes the DCE at the data station end, and may include equipment (75) to a DCE at the data switching exchange or dam concentrator location. （73）处填（）。
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It’s nearly midnight in the big city. But the big city is not (36) . The sidewalks are crowded with people. Some are (37) the movies, the plays, and the concerts. Some are stopping to look in the bright store windows. Some are waiting for buses and taxis. The (38) are filled with people. The hotels are filled with (39) and businessmen who have come from all over the world. Many people work at night in the big city. Bright lights are shining from the windows of the tall buildings. In newspaper offices, reporters are (40) up their stories and editors are (41) over their copy. In hospitals, night nurses are making their usual (42) . In the fire stations, an (43) is waking up the firemen. A fire has just broken out somewhere in the big city. (44) .Taxis are taking tired people from the airport and the railroad stations to the hotels. (45) .Trucks are bringing fresh fruit and vegetables into the city. Ships loaded with food and fuel are tied up at the dock. (46) .But they are never deserted in the big city.
某管道安装工程项目。该管道工程属于超高层建筑管道工程，由于施工项目经理部严格执行超高层建筑管道施工的技术要点，使得工程进展非常顺利，施工质量达到各项要求。管道安装完毕后，对其进行了系统试验，试验时的有关实施过程如下：(1) 采用闪点为40℃的可燃液体介质对管道进行液压试验；(2) 在进行液压试验时其环境温度为2℃；(3) 在进行气压试验时，承受内压钢管的试验压力为设计压力的2.15倍；(4) 泄漏性试验合格后进行真空度试验。 输送何种物质的管道必须进行泄漏性试验？
某啤酒生产线设备安装工程项目。施工项目经理部在各工程正式施工开始前，对各项准备工作及影响质量的各因素和有关方面进行了质量控制。施工项目经理部为了确保工程项目质量符合设计意图和国家规范、标准的要求，采用 PDCA循环方法对该工程进行质量控制。以下是该施工项目经理部在质量控制过程中的部分具体方法：(1) 确定质量总目标并分解成分目标；(2) 绘制竣工图；(3) 对工程进场材料进行检验；(4) 进行联动调试和试运转；(5) 检查竣工资料文件；(6) 编制施工组织总设计；(7) 参加设计技术交底；(8) 对施工工艺、方法、工序进行质量监督。 工程交付使用后的服务质量控制的主要内容有哪些？
计算机对主存的要求是速度快、容量大、价格低，但现实情况三者很难统一于一身，很难找到这种存储器件。为了能解决这一需求，在主存与CPU之间增加一级 cache，其主要目的是为解决 (1) ，每次CPU访问主存时，都先要查询该单元数据是否已调入cache。为了把主存地址变成cache地址，常常使用3种cache地址映像方式，其时全相联地址映像方式，使用起来最方便、最灵活但查找很困难，为了达到cache的要求，实现时常常采用 (2) ，按照cache字块标志的内容访问映像存储器，查找命中的cache字块地址。 （1）处填（）。
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