【单选题】Which of the following is TRUE according to the passage?
A.
When a patent becomes out of effect, it can be re-patented or extended if necessary.
B.
One can get all the details of a patented invention from a library attached to the patent office.
C.
A patent holder must publicize the details of his invention when its legal period is over.
D.
An inventor needs to apply for a patent before he makes his invention public.
【单选题】在一个会计期间发生的一切经济业务,都要依次经过的核算环节是( )。
【单选题】在一个会计期间发生的一切经济业务,都要依次经过的核算环节是()
【单选题】在一个会计期间发生的一切经济业务,都要依次经过的核算环节是( )
【单选题】在一个会计期间发生的一切经济业务,都要依次经过的核算环节是( )。
【判断题】Withdrawal happens before the offer becomes effective while revocation happens after the offer becomes effective.
【单选题】在一个会计期间发生的一切经济业务,都要依次经过的核算环节是()
【单选题】Which of the following is TRUE according to the passage?
A.
When a patent becomes out of effect, it can be repatented or extended if necessary.
B.
It is necessary for an inventor to apply for a patent before he makes his invention public.
C.
A patent holder must publicize the details of his invention when its legal period is over.
D.
One can get all the details of a patented invention from a library attached to the patent office.
【单选题】在一个会计期间发生的一切经济业务,都要依次经过的核算环节是( )
【单选题】Which of the following is true according to the passage?
A.
When a patent becomes out of effect, it can be re-patented or extended if necessary.
B.
It is necessary for an inventor to apply for a patent before he makes his invention public.
C.
A patent holder must publicize the details of his invention when its legal period is over.
D.
One can get all the details of a patented invention from a library attached to the patent office.