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听力原文:M: You should have seen the line at the housing office. It took me an hour to make my dormitory deposit for next year. Have you made yours yet? W: No, I'm not sure I'm going to. M: There's not much time left. The deadline's May 1. That is just two weeks from now. Are you short of cash. W: No, I'm Okay. M: You'd better hurry up if you want a dorm room next September. There aren't enough morns for every one, and first-year students have priority. W: Well, I've been thinking about living off campus. M: Have you any idea how much that would cost? There is the rent, utilities, and you'd probably need a car. W: I know it would be more expensive. I think I can handle it though. The dorm is just so noisy that I can't get anything done. Maybe my grades would be better if I had some peace and quiet in a place of my own. M: You should study in the library the way I do. Think of the money you'd save. W: I've got to think it over some more. There's still two weeks left in April. (29)
A.
When to move.
B.
Where to live the following year.
C.
How much time to spend at home.
D.
Whose house to visit.
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【简答题】易位杂合体的突出特点是半不育性。之所以会半不育,是因为它产生配子时,性母细胞在减数分裂的___时期,与易位有关的两对染色体会有两种分裂方式,即___式和___式。____式分离产生的含有____染色体的配子全不育,而_____式分离产生的含有_____染色体和_____染色体的配子全可育。由于这两种分离方式发生的机会一般大致相似,于是导致易位杂合体的半不育。
【简答题】{设离散型随机变量X的概率分布如下: , , ,则 .}
【单选题】下面描述错误的是
A.
安全法规管理的任务是使城市轨道交通运营安全管理工作做到有法可依,有章可循,违法必究,违章必查。
B.
安全信息是指在运营生产过程中,对一切有利于安全生产的指令和系统安全状态的描述或反映。
C.
安全知识教育一般包括安全生产技术知识教育、安全管理知识教育和事故应急处理知识教育
D.
主要是运用各种安全管理手段对个人行为、群体行为、管理行为及人际关系进行激励、约束和协调的是安全行为管理。
【简答题】PR界面包括哪五大块?
【单选题】有关分离点与会合点下列说法错误的是()。
A.
分离点与会合点一般是实数或共轭复数对
B.
若实轴上两相邻极点间存在根轨迹,则这两相邻极点间必有分离点
C.
若实轴上两相邻零点间存在根轨迹,则这两相邻极点间必有会合点
D.
若实轴上根轨迹处在开环邻零点和极点之间,则二者之间必定有分离点和会合点
【单选题】分离点与会合点一般是( )。
A.
实数或共轭复数对
B.
共轭复数对
C.
实数
D.
正实数
【单选题】相声《抬杠》中“抬杠”的含义是什么?
A.
抬轿子
B.
抬头
C.
争论
D.
赞成
【单选题】我国义务教育阶段的课程计划应该具有的三个特征是( )。
A.
强制性、基础性、科学性
B.
强制性、普通性、科学性
C.
科学性、普遍性、基础性
D.
强制性、普遍性、基础性
【判断题】因地制宜也是传统建筑的天人合一思想的体现。。
A.
正确
B.
错误
【单选题】有关分离点与会合点下列说法错误的是是()
A.
分离点与会合点一般是实数或共轭复数对
B.
若实轴上两相邻极点间存在根轨迹,则这两相邻极点间必有分离点
C.
若实轴上两相邻零点间存在根轨迹,则这两相邻极点间必有会合点
D.
若实轴上根轨迹处在开环邻零点和极点之间,则二者之间必定有分离点和会合点
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