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市场(Market)

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党的代表大会和委员会是怎样产生的?

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

拨车机四个走行装置中有一个弹性走行轮装置,其余三个为固定走行轮装置。

A. 正确
B. 错误

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