_____ 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
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参考答案:
举一反三
【简答题】Dear Sirs, Your shipment of twelve thousand “Smart” watches was received by our company this morning. However, we wish to make a number of complaints concerning the serious delay in delivery and your ...