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问题 选择题

一个数用科学记数法表示为5.18×10﹣7，则原数是 [ ]

A．0.0000518

B．0.00000518

C．0.000000518

D．0.0000000518

答案

答案：C

单项选择题

痿证属湿热袭络者除选主穴外还可配用( )

A．阴陵泉、大椎、内庭

B．太白、中脘、关元

C．太溪、肾俞、肝俞

D．尺泽、肺俞、二间
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单项选择题

定义一个用于封禁ICMP协议而只允许转发166.129.130.0/24子网的ICMP数据包的访问控制列表，Cisco路由器的正确配置是

A．access-list 198 permit icmp 166.129.130.0 255.255.255.0 any　　access-list 198 deny icmp any any　　access-list 198 permit ip any any

B．access-list 198 permit icmp 166.129.130.0 0.0.0.255 any　　access-list 198 deny icmp any any　　access-list 198 permit ip any any

C．access-list 99 permit icmp 166.129.130:0 0.0.0.255 any　　access-list 99 deny icnip any any　　access-list 99 permit ip any any

D．access-list 100 permit icmp 166.129.130.0 0.0.0.255 any　　access-list 100 permit ip any any　　access-list 100 deny icmp any any
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