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【单选题】
下述哪个选项的条件无法保证刚体运动一定是平移？A.
刚体运动时，其上有不在一条直线上的三点始终作直线运动。
B.
刚体运动时，其上所有点到某固定平面的距离始终保持不变。
C.
刚体运动时，其上有两条相交直线始终与各自初始位置保持平行。
D.
刚体运动时，其上有不在一条直线上的三点的速度大小、方向始终相同。
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【单选题】Which type of questions is especially useful for getting people’s knowledge in a specific field when designing an audience-analysis questionnaire?
A.
Yes- no questions
B.
Scale questions
C.
Multiple choice questions
D.
Open-ended questions
【单选题】When designing a question for the beginning part of your speech, you should_______.
A.
make up a question based on the audience analysis
B.
raise a very difficult question to your audience.
C.
choose a question according to your own preference.
D.
invent a new question that has never been asked before.
【单选题】When designing your house, you'd better ____ land for a garden．
A.
develop
B.
save
C.
spare
D.
share
【单选题】下列关于历史和文化的说法中错误的是( )。
A.
文化传承被称为国家和民族的胎记
B.
文化是民族凝聚力的重要基础
C.
历史和文化是培养民族精神的摇篮
D.
传承文化就是坚守传统文化的所有理念
【单选题】When designing a sourcing strategy, it is important for a firm to
A.
develop a process that will procure materials at the lowest possible cost.
B.
maintain a record of all contracts, receipts, issues and other transactions in the event of lawsuits.
C.
maximize the profitability of the distributors within the supply chain.
D.
be clear on the factors that have the greatest influence on performance and target improvement on those areas.
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