甲乙两人在同一时间就同样内容的发明创造并都提交了专利申请，专利局将分别向各申请人通报有关情况，并提出多种解决这一问题的办法，不可能采用(15)的办法。
- A．两申请人作为同一件申请的共同申请人
- B．其中一方放弃权力并从另一方获得适当补偿
- C．两件申请都不授予专利权
- D．两件申请都授予专利权
-
(65)
- A．half duplex
- B．full duplex
- C．half or full duplex
- D．half and full duplex
-
(64)
- A．a primary station
- B．one or more primary stations
- C．a secondary station
- D．one or more secondary stations
-
(63)
- A．a primary station
- B．one or more primary stations
- C．a secondary station
- D．one or more secondary stations
-
SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment . A varietion of the (71) protocol called NRM is essentially the same as SDLC. SDLC is (72) protocol like HDLC, Frame. Relay or X.25. An SDLC network is made up of (73) that controls all communications, and (74) . It is capable of (75) operation, but almost all practical applications are strictly half duplex.
- A．HDLC
- B．Frame. Relay
- C．X.25
- D．X.21
-
(62)
- A．a peer to peer
- B．a point-to-point
- C．not a peer to peer
- D．a peer to peers
-
(59)
- A．bits
- B．frequencies
- C．packets
- D．messages
-
(60)
- A．rate
- B．velocity
- C．bandwidth
- D．period
-
(57)
- A．direct-sequence
- B．discrete-sequence
- C．duplicate-sequence
- D．dedicate-sequence
-
(58)
- A．data
- B．byte
- C．packet
- D．bit
-
In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.
Spread spectrum simply means that data is sent in(66)pieces over a number of the discrete frequencies available for use at any time in the specified range. Devices using(67) spread spectrum (DSSS)communicate by splitting each(68)of data into several parts and sending them concurrently on different (69), DSSS uses a lot of the available(70), about 22 megahertz (MHz).
- A．small
- B．high
- C．low
- D．long
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