由公务员、医生、教师等行政事业单位或金融、通讯、电力、烟草等优势行业正式在编人员提供保证担保（包括单人和多人担保）的农业产业链农户贷款，单户贷款额度最高不超过（）。
A. 10万元
B. 20万元
C. 30万元
D. 50万元
查看答案
Which statement describes the process of dynamically assigning IP addresses by the DHCP server?（）
Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.
B. Addresses are permanently assigned so that the hosts uses the same address at all times.
C. Addresses are assigned for a fixed period of time, at the end of the period, a new request for an address must be made.
D. Addresses are leased to hosts, which periodically contact the DHCP server to renew the lease.
井下发生瓦斯积聚时，在场的带班领导及安全员首先应该做到（）
A. 排除积聚的瓦斯
B. 通知矿调度室
C. 立即撤出现场作业人员
D. 通知矿领导
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