Which statement about standard STS-1 SONET framing is true？（）
- A、8 rows by 64 bytes
- B、6 rows by 64 bytes
- C、10 rows by 96 bytes
- D、8 rows by 128 bytes
- E、9 rows by 90 bytes
正确答案:E
答案解析:有
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Which statement about standard STS-1 SONET framing is true？（）
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