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【单选题】
GPON的T-CONT分为5种业务类型，不同类型的T-CONT具有不同的带宽分配方式，可以满足不同业务流对、抖动、丢等不同的QoS要求。T-CONT类型4的特点是（）A.
保证带宽（AssureD.分配，适合对抖动要求不高的固定带宽业务
B.
固定带宽（FixeD.分配，适合对敏感的业务
C.
非保证带宽（Non-AssureD.分配，适合于有服务保证要求而又突发流量较大的业务
D.
尽力而为（BestEffort），无带宽保证，适合和抖动要求不高的业务
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举一反三
【简答题】That letter was ______to me.
【单选题】Her letter was in such a casual scrawl, and in such pale ink, that it was ______.
A.
unintelligible
B.
vague
C.
ambiguous
D.
illegible
【单选题】His letter was in such a casual scrawl and in such pale ink that it was ______
A.
doubtful
B.
ambiguous
C.
obscure
D.
illegible
【单选题】Simon's letter was in such a casual scrawl, and in such pale ink, that it was_____
A.
vague
B.
ambiguous
C.
illegible
D.
obscure
【简答题】A letter was accordingly addressed to that lady, who returned for answer that I might________________(按我自己的意思办).
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