【简答题】【消耗次数:1】
什么是WBS(work breakdown structures)?
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相关题目
【简答题】 WBS分解的实质意义是什么?
【单选题】 要制定项目的WBS工作分解结构,首先必须:
①  确定项目的主要可交付成果
②  确定项目的每个可交付成果的组成部分
③  估计每个项目可交付成果的成本和使用寿命
④  明确主要任务
【单选题】 Success results ___________ hard work, and hard work results in success.
①  from
②  in
③  by
④  with
【单选题】 The electric fan does not work because of the ____ of service.
①  pause
②  break
③  interruption
④  breakdown
【单选题】 The electric fan does not work because of the _____of service.
①  pause
②  break
③  interruption
④  breakdown
【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】 It to work hard.
①  pay
②  pays
③  paying
④  paid
【单选题】 Which of the following is the advantage of whole class 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  There is always a great chance of different opinions and contributions to the work
④  It is less stressful.
【单选题】 Which of the following is the time when students work in groups?
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 group
④  When students are expected to work on their own at their own speed.
【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.
随机题目
【判断题】 材料的失效模式与材料本身、应力状态均有关。
①  正确
②  错误
【单选题】 最大切应力所在的截面和主平面成的角度是?
①  30°
②  60°
③  45°
【单选题】 圆轴扭转时,轴表面各点处于?
①  平面应力状态
②  空间应力状态
③  单向应力状态
【判断题】 等截面直梁在弯曲变形时,挠曲线曲率最大发生在转角最大处。
①  正确
②  错误
【判断题】 中性轴是梁的横截面与中性层的交线。梁发生平面弯曲时,其横截面绕中性轴旋转。
①  正确
②  错误
【单选题】 平面弯曲的特征是?
①  弯曲时横截面仍保持为平面
②  弯曲载荷均作用在同一平面内
③  弯曲变形后的轴线与载荷作用面同在一个平面内
【单选题】 由梁的平面假设可知,纯弯曲时,梁的横截面?
①  载荷作用在梁的纵向对称面内
②  梁的各个截面上均无剪力,且弯矩为常量
③  梁只发生弯曲,不发生扭转和拉压变形
【判断题】 电动机传动轴横截面上扭矩与传动轴的传递功率成反比。
①  正确
②  错误
【单选题】 圆轴扭转切应力公式适用的杆件范围是?
①  等截面直杆
②  实心或空心圆截面杆
③  圆截面杆或矩形截面杆
【单选题】 直径为D的实心圆轴,两端受扭转力矩作用,轴内最大切应力为τ。若轴的直径改为0.5D,则轴内的最大切应力变为?
① 
② 
③ 
④  16τ