What does your university look like?
A) It's small but beautiful.
B) I like it.
C) I don't like it.
D) I like teachers there.
第2题
A.所有的ONU都支持互通和非互通标准
B.互通和非互通标准的ONU可以挂在同一PON板下面
C.互通和非互通标准的ONU不能挂在同一PON板下面
D.互通和非互通标准的ONU不能挂在同一个OLT下面
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