主页
学科
搜索
账户
常见问题
当前学科：地铁传输
题目：
多选
STM-1帧结构中，哪些功能字节占有相同的带宽：（）
A . E1、E2
B . A1、A2
C . B1、B2
D . K1、K2
答案：
<查看本题扣1积分>
查看答案
答案不对？请尝试站内搜索
推荐知识点:
简述原料油泵启动前应做的准备工作？
During initial days of computing, software was largely developed by small groups of people. When this software was to be maintained by another set of people, it used to be a nightmarish experience. When large commercial projects were to be handled, it used to be analmost impossible task to keep the time and budget under control, and projects used to get delayed and many projects were abandoned halfway. There was no systematic procedure forthe software development; everything was done on ad hoc basis. This ad hoc approach led tothe 'software crisis'.Over the last few decades there has been a tremendous growth in information technologyand its impact on everyday life. Complex software systems have become critical to theoperation of many systems in areas such as banking, communications, manufacturing,power generation, and transportation. Progress in computer science and accumulated experience with industrial production of software have led to the emergence of software engineering as a separate discipline. The software engineering discipline has been defined as"the application of systematic, disciplined, quantifiable approaches to the development,operation, and maintenance of software. " that is, the application of engineering to software .The computer science discipline concerns with developing large applications. Software engineering covers not only the technical aspects of building software systems, but also management issues, such as directing programming teams, scheduling, and budgeting.For developing a software product, the development process is divided into differentstages. A convenient way of splitting the whole process is to divide the development into thefollowing five stages:Requirements Analysis & Specification: define the system requirements in detailDesign: specify system architecture and modules in detailCoding: produce source codeTesting: deal with unit testing and system testingMaintenance: fix bugs, enhance features and adapt across platforms.{二)Tell whether the following statements are true (T ) or false ( F) according to the passage A.(根据上立的内容判断下列句子的正误。 )36. During initial days of the development of software, everything was done in discipline. ( )37. The definition of software engineering is "the application of systematic, disciplined,quantifiable approaches to the development, operation, and maintenance of software. " ( )38. For developing a software product, you need design, coding and testing. ( )39. software engineering is the application of engineering to software. ( )40. Software engineering only covers the technical aspects of building software systems. ( ) .
格林-巴利综合征急性期的治疗有（）
《电离》的作曲家是（）
微观经济学认为，需求表及曲线所要说明的是某一商品在每一价格上的( )。 A．购买量 B．价格大小 C．价格和购买量 D．价格变动原因
过敏性炎中，具有特征性的炎细胞是（）。
男性，32岁，头晕、头痛多年，额窦X线检查如图所示，则最可能的诊断是（）。
双人婚纱照的主光应从二人中处于（）者一侧照射。
女性，19岁。右肘关节外伤，当地医院X线检查诊断肱骨髁上骨折，经两次手法复位未成功。来院时为伤后48小时。查体：右肘关节半屈位，肿胀较重，压痛明显，手指活动障碍，桡动脉搏动弱，手指凉，麻木。此时，根据患者体征，应诊断肱骨髁上骨折合并（）。
（）是顺畅沟通的最佳渠道。