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[单选题]
同步数字体系的STM-1级别的标准速率是()。
A.622.08Mbit/s
B.155.520Mbit/s
C.1244.16Mbit/s
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A.622.08Mbit/s
B.155.520Mbit/s
C.1244.16Mbit/s
第6题
A.STM-0是51840Kbit/s
B.STM-1是155520Kbit/s
C.STM-4是622080 Kbit/s
D.STM-16是2488320Kbit/s
E.STM-64是9953280Kbit/s
F.STM-128是39813120Kbit/s
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