【判断题】【消耗次数:1】
箭线型网络图应该有、也只能有一个起始节点和一个终止节点。
正确
错误
参考答案:
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相关题目
【判断题】 下列关于双代号网络计划绘图规则的说法,网络图必须正确表达各工作间的逻辑关系、网络图中严禁出现没有箭头节点或没有箭尾节点的箭线、时标网络计划只有一个起点节点和一个终点节点是正确的。
①  正确
②  错误
【判断题】 单代号网络图中只允许出现一个起点节点和一个终点节点。()
①  正确
②  错误
【判断题】 双代号网络图由箭线、节点和线段3个基本要素组成。
①  正确
②  错误
【判断题】 箭线型网络图是以箭线表示活动。
①  正确
②  错误
【判断题】 双代号网络图的组成基本要素有节点、工作、箭线。
①  正确
②  错误
【单选题】 一个n变量的逻辑函数应该有(  )个最小项。
①  n
②  2n
③  2n
④  n2
【判断题】 网络图中任一个节点都可以表示前一工序的结束和后一工序的开始
①  正确
②  错误
【单选题】 人在每一个阶段都应该有( )具体而明确的目标。
①  一个
②  两个
③  三个
④  多个
【判断题】 单代号网络图有多个起始工作时,应在开始位置前增加一虚工作,作为起点节点。
①  正确
②  错误
【判断题】 一个网络图有唯一的关键线路
①  正确
②  错误
随机题目
【单选题】 What role does a teacher play in the following activity? When students are doing a group-work task, the teacher joins one or two groups for a short period of time.
①  Controller
②  Assessor
③  participant
④  Resource-provider.
【单选题】 What role does a teacher play in the following activity? The teacher has a word in his mind and asks students to guess by asking only Yes/No questions until they make the correct guess.
①  Controller
②  Assessor
③  participant
④  Resource-provider.
【单选题】 Which of the following is the advantage of pair work?
①  It is an ideal way to show materials and do presentations together
②  It allows students to work together rather than under teacher’s guidance
③  It reinforces a sense of belonging among a group of members
④  It is very stressful.
【单选题】 Which of the following is the time when students work in a pair?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small groups
④  When students are expected to work on their own at their own speed.
【单选题】 What role does a teacher play in the following activity? The teacher writes one of five numbers (1-5) on a number of cards (the same number as the students). Each student draws one card. Those who have drawn number 1 will form group1, and those who have drawn number 2 will form group 2. Thus the students are put into five groups in a random way.
①  Controller
②  Assessor
③  Organizer
④  Prompter.
【单选题】 What are language contents?
①  Structures, vocabulary, functions and topics
②  Pictures, vocabulary, communication and topics
③  PPT, structures, aims and summary
④  Structures, aims, functions and topics.
【单选题】 Which part is to be finished after a lesson in a lesson plan?
①  Teaching aids
②  End of a lesson summary
③  Optional activities and assignment
④  After lesson reflection.
【单选题】 What are the principles for good lesson planning?
①  Aim, variety, flexibility, learnability and linkage
②  Aim, preparation flexibility and linkage
③  Aim, micro-planning, macro-planning and flexibility
④  Aim, micro-planning, macro-planning and variety.
【单选题】 What is the function of optional activities?
①  Backups in case the lesson goes too fast and there are a few minutes left
②  Prepared for good students
③  Prepared for bad students
④  Used for emergency.
【单选题】 What are very commonly used teaching procedures and stages?
①  Presentation, practice and production
②  Pre-reading, while-reading and post-reading
③  Mechanical practice and meaningful practice
④  Both A and B.