搜题请搜索小程序“爱下问搜题”
问题 单项选择题

无结石性胆囊炎发生的主要原因是

A．胆道蛔虫引起感染

B．致病菌随血行扩散至胆囊

C．迷走神经功能亢进

D．胆汁淤滞

E．胆汁中胆固醇过多

答案

参考答案：B

解析：无结石性胆囊炎则因胆囊功能异常，排空障碍，或致病菌自血液循环传播而引起。

改错题

单句改错。

1. You are supposed saying hello to your teacher in the morning.

                                                        ____________________.

2. I greet to my teacher politely every morning.

                                                                                               . 

3. I often drop at my English teacher's home on Sunday.

                                                                                               .

4. You are supposed not to make noise while eating noodles.

                                                                                              . 

5. What is the particular challenge that Jack is facing with now?

                                                      ____________________.
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填空题

接入层交换机Switch1的端口24为trunk口，其余各口属于vlan11，请解释下列命令并完成交换机的配置。
Switch1#config terminal
Switch1(config)#interface f0/24 (进入端口24配置模式)
Switch1(config-if)#switchport mode trunk (1)
Switch1 (config-if)#switchport trunk encapsulation dotlq (2)
Switch1 (config-if)#switchport trunk allowed all(允许所有VLAN从该端口交换数据)
Switch1 (config-if)#exit
Switch1 (config)#exit
Switch1 #vlan database
Switch1 (vlan)#vlan 11 name lab01 (3)
Switch1 (vlan)#exit
Switch1#config terminal
Switch1 (config)#interface f0/9 (进入f0/9的配置模式)
Switch1 (config-if)# (4) (设置端口为接入链路模式)
Switch1 (config-if)# (5) (把f0/9分配给VLAN11)
Switch1 (config-if)#exit
Switch1 (config)#exit
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