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【单选题】
下列关于IEEE 802.1D生成树协议(STP)的描述中，错误的是______。A.
STP是一个数据链路层的管理协议
B.
STP运行在网桥和交换机上，通过计算建立一个稳定、无回路的树状结构网络
C.
网桥协议数据单元(BPDU)携有Root ID、Root Pass Cost、Bridge ID等信息
D.
通知拓扑变化的BPDU长度不超过35字节
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What does Michael do?
A.
He works for U-learning Online.
B.
He studies at U-learning Online.
C.
He works at U-learning Academy.
【单选题】辛亥革命爆发的历史条件有() A. B. C. D.
A.
民族危机加深
B.
社会矛盾激化
C.
清末“新政”的破产
D.
资产阶级革命派的阶级基础和骨干力量越来越壮大
【多选题】which of the following statements of Milton Friedman are correct: In the 1960s, however, economist Milton Friedman claimed that a Keynesian approach to economics produces unforeseen negative consequen...
A.
he is considered to be one of the founders of neo-Keynesian economics.
B.
claimed that a Keynesian approach to economics produces unforeseen negative consequences
C.
He proposed re-adopting Adam Smith’s policy of laissez-faire.
D.
He proposed relegate the government’s role in economic activity to simply expanding the nation’s moneysupply.
E.
he suggested that the U.S. could quickly recover from economic hardship through lower taxes and federal deficit spending.
【简答题】What should Michael do first?
【单选题】What is Michael doing?
A.
He is waiting for his lunch.
B.
He is trying to complete a report.
C.
He is faxing a report to Silvia.
D.
He is trying to contact with Silvia.
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