问题 单项选择题

患者,男性,56岁,逐渐出现言语不清、吞咽困难和饮水呛咳。查体:双软腭提升差,咽反射消失,伸舌欠佳,有舌肌萎缩。提示病变部位在()

A.双大脑半球

B.延髓

C.舌咽神经和迷走神经

D.舌下神经

E.脑桥

答案

参考答案:B

解析:患者为真性球麻痹,定位于延髓

单项选择题

在一台Cisco路由器上执行show access-lists命令显示如下一组信息
Extended IP access list port4444
permit icmp 202.38.97.0,wildcard bits 0.0.0.255 any
deny icmp any any
deny udp any any eq 1434
deny tcp any any eq 4444
permit ip any any
根据上述信息,正确的access-list的配置是

A) Router(config) # ip access-list extended port4444
Router(config-ext-nacl) # deny icmp any any
Router(config-ext-nacl) # deny udp any any eq 1434
Router(config-ext-nacl) # deny tcp any any eq 4444
Router(config-ext-nacl) # permit icmp 202.38.97.0 0.0.0.255 any
Router(config-ext-nacl) # permit ip any any
B) Router(config) # access-list port4444 permit icmp 202.38.97.0 0.0.0.255 any
Router(config) # access-list port4444 deny icmp any any
Router(config) # access-list port4444 deny udp any any eq 1434
Router(config) # access-list port4444 deny tcp any any eq 4444
Router(config) # access-list port4444 permit ip any any
C) Router(config) # ip access-list extended port4444
Router(config-ext-nacl) # permit 202.38.97.0 0.0.0.255 any icmp
Router(config-ext-nacl) # deny any any icmp
Router(config-ext-nacl) # deny any any udp eq 1434
Router(config-ext-nacl) # deny any any tcp eq 4444
Router(config-ext-nacl) # permit ip any any
D) Router(config) # ip access-list extended port4444
Router(config-ext-nacl) # permit icmp 202.38.97.0 0.0.0.255 any
Router(config-ext-nacl) # deny icmp any any
Router(config-ext-nacl) # deny udp any any eq 1434
Router(config-ext-nacl) # deny tcp any any eq 4444
Router(config-ext-naci) # permit ip any any

单项选择题 A1/A2型题