After the computer starts, the desktop does not have any icons, and the mouse left and right keys did not respond, how do?
May be in the virus, it is recommended to reinstall the system. After the completion of heavy equipment to use anti-virus software for a comprehensive scan.
To ensure that the bridge full length of the location of not less than 2 of the ground - the ground can be laid along the cable to the ground, it can be in the distribution room, electric wells reserved for the ground terminal. To do this has been to meet the requirements of the bridge grounding. But the bridge itself is only to meet the grounding requirements, the bridge itself can not be used as the grounding of other equipment. If the equipment to ground, you need to lay the ground to the equipment, so that equipment can be connected to the ground. This ground can be a core of five-core cable, but also a separate bridge along the laying of a dedicated ground flat steel.
In the threading tube to wear the wire only to wear the hand is not, the tube has a curved arc, the first wire into the wire on the bundle to wear the wire, to the other end of the wire pull the wire, this side has a Individual line to wire tube race wire.
Fire alarm system cable according to the use of methods and voltage levels to divide, such as power lines according to power requirements can use 2
