当粉尘比电阻比较高时,由于被吸附的粉尘所带电荷较多,()较大,而出现粉尘较难振落时,系统软件将根据高压设备运行中二次电压、二次电流所体现的变化特性得出判断,在单路振打时降低对应电场的供电功率,使粉尘易于振落,振打过后又恢复正常供电。
A. 灰量
B. 高压直流电源
C. 吸附力
D. 吸引力
在EIA/TIA-568B标准中,当今的网络安装中最经常使用()。
A. 第二类电缆
B. 第三类电缆
C. 第四类电缆
D. 第五类电缆
进入特殊前行运行中,如机车信号接收到()信号,LKJ自动退出“特殊前行”控制后,必须停车,按规定重新办理发车。
You are using a Windows 2000 Professional computer. You create a shortcut for the folder named PROJECTS on the network share. You want to make shortcuts to the projects folder available, when you are not connected to the network. You attempt to configure the shortcut to be available offline. However you do not see an option to make the folder available offline. What should you do?()
A. Use Windows Explorer to enable the cache for the project folder.
B. Use Windows Explorer to configure the projects folder on the network share to be available for offline access.
Connect to the network before trying to make the shortcut available online.
D. Create shortcuts to each file in the projects folder and then make the shortcut files available offline.