此组图中的表现是受精后第___天、原始胚盘形成后出现_____的结果。
参考答案：13；分裂复制
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
含氰基的化合物叫氰化物，大多数氰化物属____物质。
A.剧毒
B.无毒
C.有害
