SDH信号最基本的模块信号是
A.STM-0
B.STM-1
C.STM-3
D.STM-4
参考答案:B
解析: SDH信号最基本的模块信号是 STM-1。
____teacher of my grandmother’s is coming the day after tomorrow. I’m wondering
how old____woman she should be.
A.The; a
B.A; a
C.A; the
D.The; the
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