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【多选题】
以下属于客户关系的特征的是( )A.
持续性
B.
排他性
C.
相互依赖性
D.
互动性
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皮皮学刷刷变学霸
举一反三
【单选题】_____ are established through patents, copyrights, and trademarks.
A.
Digital signatures
B.
Ownership rights over private property
C.
Origination fees and tributes
D.
Ownership rights over intellectual property
【多选题】Which of the following statements is true about patents and copyrights?
A.
They have benefits and costs.
B.
They lead to higher prices.
C.
They enhance the ability of monopolists to earn above-average profits.
D.
They lead to lower prices.
【简答题】机床部件中,能够直接影响到被加工零件轮廓形状的运动,统称为 运动。该运动由 和 组成。
【判断题】Patents, copyrights, and trademarks establish ownership rights over intellectual property.
A.
正确
B.
错误
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