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【单选题】
根据赫塞—布兰查德提出的情境领导理论，在下属虽然有积极性，但缺乏足够的技能的 情况下，应采用的领导风格是( ) 。A.
高工作—高关系
B.
低工作—低关系
C.
低工作—高关系
D.
高工作—低关系
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【单选题】E1 carrier link multiplexes channels according to TDM. The original analog voice signal is digitized using PCM at a rate of 8000 samples. So,the data rate of E1 is .
A.
30 ， 1.544Mbps
B.
32 ， 2.048Mbps
C.
24 ， 1.544Mbps
D.
24 ， 2.048Mbps
【单选题】If one were to transmit such information without impressing it on an optical carrier but instead on a radio frequency carrier , the transmission wavelength of the RF carrier would be centimeters or la...
A.
without the impression that an optical carrier can replace a radio frequency carrier
B.
without pressing an optical carrier but instead pressing a radio frequency carrier on it
C.
without modulating an optical wave but instead a radio frequency wave
D.
this delay must indeed be no more than one internal bit
【多选题】Which four statements about the Carrier Supporting Carrier （CSC） feature are true？ （）
A.
MPLS is required between the PE and CE routers that connect the backbone carrier to the customer carrier.
B.
The backbone carrier must enable the PE router to check that the packets it receives from the CErouter contain only the labels that the PE router advertised to the CE router.
C.
Every packet that crosses the backbone carrier must be encapsulated so that the packet includes MPLS labels
D.
AII PE routers that link the backbone carrier to the customer carrier must run Route Target Rewrite.
E.
Arouting protocol is required between the PE and CE routers that connect the backbone carrierto thecustomer carrier. The routing protocol enables the customer carrier to exchange IGP routing information with the backbone carrier.
【单选题】Where both the carrier and the actual carrier are liable for compensation，they shall ______ be liable within the scope of such liability．
A.
separately
B.
jointly
C.
severally
D.
jointly and severally
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