视网膜中央凹内的一个视锥细胞与一个双极细胞形成一对一的连接,后者又与节细胞形成一对一的连接,以精确传导视觉。
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Your network contains two DHCP servers. The DHCP servers are named DHCP1 and DHCP2. The internal network contains 1,000 DHCP client computers that are located on a single subnet. A routerseparates the internal network from the Internet. The router has a single IP address on the internal interface. DHCP1 has the following scope information. èStarting IP address: 172.16.0.1 èEnding IP address: 172.16.7.255 èSubnet mask: 255.255.240.0 You need to provide a fault-tolerant DHCP infrastructure that supports the client computers on the internal network. In the event that a DHCP server fails, all client computers must be able to obtain a valid IP address. How should you configure DHCP2?()
A. Create a scope for the subnet 172.16.0.0/20. Configure the scope to use a starting IP address of 172.16.8.1 and an ending IP address of 172.16.15.254.
B. Create a scope for the subnet 172.16.0.0/21. Configure the scope to use a starting IP address of 172.16.0.1 and an ending IP address of 172.16.15.254.
Create a scope for the subnet 172.16.8.0/21. Configure the scope to use a starting IP address of 172.16.8.1 and an ending IP address of 172.16.10.254.
D. Create a scope for the subnet 172.17.0.0/16. Configure the scope to use a starting IP address of 172.17.0.1 and an ending IP address of 172.17.255.254.
静电会引起()和火灾。
A. 爆炸
B. 摩擦
C. 致命
D. 短路
兰科植物的菌根属于外生菌根菌。()
A. 正确
B. 错误