问题
单项选择题
在STM-N中，目前ITU—T建议中还没有确定的N值是（）。
A.1
B.4
C.16
D.64
答案
参考答案：D
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在STM-N中，目前ITU—T建议中还没有确定的N值是（）。
A.1
B.4
C.16
D.64
参考答案：D
| 完形填空。 | |||
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