题目内容

耗斗机适用于倾角大于30度的斜巷掘进装岩()

A. 正确
B. 错误

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新人点烛台时不小心把把烛台弄倒了。您怎样说?

横向安装的圆销应在开口销与被连接件之间()。

电路中的总电阻等于各段电阻之和的电路是()。

A. 串联电路
B. 并联电路
C. 混联电路
D. 复杂电路

Select the action that results from executing these commands. Switch(config-if)# switchport port-security. Switch(config-if)# switchport port-security mac-address sticky()

A dynamically learned MAC address is saved in the startup-configuration file.
B. A dynamically learned MAC address is saved in the running-configuration file.
C. A dynamically learned MAC address is saved in the VLAN database.
D. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.
E. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.

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