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【单选题】
下列关于碳原子的成键特点及成键方式的理解，正确的是 （ ）A.
饱和碳原子不能发生化学反应
B.
C原子只能与C原子形成不饱和键
C.
任何有机物中H原子数目不可能为奇数
D.
五个C原子之间能够形成五个碳碳单键
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举一反三
【简答题】Note that when the steering angle is zero, a=b=0.5, which means that the driving force will be equally distributed to the left or right sides of the vehicle. (steering angle 转向角)
【判断题】When creating a code of ethics from scratch, the Institute of Business Ethics suggests that an organization first find a champion to be the driving force behind the project.
A.
正确
B.
错误
【单选题】在中职二年级开始至二年级结束前两个月的生涯发展阶段中,生涯规划准备工作不包括:
A.
建立合理的价值体系和认知结构
B.
围绕职业生涯规划制定相应的成长计划
C.
学习并运用生涯目标建立方法和生涯抉择方法,完成生涯决策
D.
参加专项行为训练,提升实现目标的行动力
【简答题】The mantra of “ faster, _________, quicker” will continue to be the driving force for senior managers of organizations to achieve their business and strategic goals.
【简答题】设在 平面上， ， 所围成图形的面积为 ，则集合 的交集 所表示的图形面积为 (A) (B) (C) (B) . （ ）
【多选题】The American system of manufacturing was developed in the early 1800s. There is general agreement that the War Department was the driving force behind the development. Around this time, the Department...
A.
The system made parts interchangeable, meaning that it was no longer necessary t return or exchange a machine in the event of a malfunction.
B.
The American system of manufacturing was initially used in the armory, but industrialists soon realized it could be applied elsewhere.
C.
There is ongoing debate over who first developed the American system of manufacturing with many inventors claiming to have made the breakthrough.
D.
Manufacturers were able to reduce their costs because the new process allowed them to separate production and assembly.
【简答题】图形所表示的各个部分不在同一个平面内，这样的图形称为______图形．
【单选题】在Windows系统中,若要直接删除文件而不进入回收站,正确的操作是_________ 。
A.
选定文件后，按Shift+Del组合键
B.
选定文件后，按Ctrl+Del组合键
C.
选定文件后，按Del键
D.
选定文件后，按Shift键，再按Del键
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