专利主管机关依法授予申请人在一定期限内对发明创造享有的专有权利是
A.专利权
B.著作权
C.债权
D.商标权
正确答案是A
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Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
The skilled carpenter worked with great ( ) and finished the job quickly. (efficient)
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