【单选题】
由于各种原因，造成全国CMNET去往电信/联通/国际方向业务中断，且中断时间超过（ ）分钟，定义为cmnet全网重大故障。___
A. 15
B. 30
C. 60
D. 90
E.
F.
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答案
B
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( ) 26. Where does the writer of "The little Prince" come from?
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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A. A
B. B
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【单选题】
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A. A
B. B
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D. D
