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搜题
【单选题】
A user is unable to connect to the network. A network technician is able to determine that there is a problem on the switch. All other users on that switch are able to connect successfully to the network. Which of the following is a probable cause？（）A.
Switching loop is occurring on the switch.
B.
Wrong subnet mask on the switch.
C.
Incorrect SNMP settings on the switch.
D.
Port is misconfigured on the switch.
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举一反三
【单选题】下列有关兴奋在同一细胞传导的叙述,哪项是错误的
A.
动作电位可沿细胞膜传导到整个细胞
B.
传导方式是通过产生局部电流刺激未兴奋部位,使之也出现动作电位
C.
在有髓纤维是跳跃式传导
D.
有髓纤维传导动作电位比无髓纤维快
E.
动作电位的幅度随传导距离增加而减小