DHCP中继和DHCP服务器之间交互的报文采用（）。
A.unicast
B.broadcast
C.multicast
D.anycast
参考答案：A
根据句意及首字母提示完成单词。
1. It's important for you to eat a b_____ diet.
2. The t_____ festival in China is the Spring Festival.
3. Exercising enough can help you s_____ healthy.
4. We can listen with ears and walk with our f_____.
5. He is very busy at the m_____. You can come to see him an hour later.
在选择实验室或其他检查时应注意()
A.检查的灵敏度和特异性
B.安全性
C.成本与效果分析
D.检查的时机
E.检查的意义
