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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35B
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皮皮学刷刷变学霸
举一反三
【单选题】Thousands of fans waited in the rain for the pop star to arrive. [ ]
A.
developed
B.
experienced
C.
devoted
D.
advanced
【单选题】Thousands of football fans were_______ to South Africa the day when the 19 th World Cupopened.
A.
attended
B.
assembled
C.
attracted
D.
attached
【单选题】由喉返神经损伤产生（）。
A.
甲状腺切除术后呛咳
B.
甲状腺切除术后音调降低
C.
甲状腺切除术后呼吸困难
D.
甲状腺切除术后高热、脉细速、呕吐
E.
甲状腺切除术后手足抽搐
【简答题】A．甲状腺切除术后呛咳 B．甲状腺切除术后音调降低 C．甲状腺切除术后呼吸困难 D．甲状腺切除术后高热、脉细速、呕吐 E．甲状腺切除术后手足抽搐 由喉返神经损伤产生（ ）
【单选题】There were thousands of _________ fans to meet you.
A.
satisfying
B.
exciting
C.
excited
D.
interesting
【单选题】_____ fans are standing on the ground to watch the football match. [ ]
A.
Thousands of
B.
Thousand of
C.
A thousand of
D.
Thousands
【单选题】_____ the fans are waiting for the popular singer outside the concert hall.
A.
Two thousand
B.
Thousands of
C.
Two thousands of
D.
Two thousand of
【单选题】She was a hard actress enjoyed the entire process, she could get joy with thousands of fans,not just being in front of the cameras. [ ]
A.
who;where
B.
that;which
C.
who;which
D.
who;as
【单选题】由喉返神经损伤产生:
A.
甲状腺切除术后呛咳
B.
甲状腺切除术后音调降低
C.
甲状腺切除术后呼吸困难
D.
甲状腺切除术后高热、脉细速、呕吐
E.
甲状腺切除术后手足抽搐搦
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