游戏介绍：一人一枪的防火线，抵御敌人不断补充的兵力进攻，第三关开始有飞机空袭，注意！
Game: one shot on the fire lines, continuously add strength to resist the enemy attack, the third air strike aircraft begins, attention!
游戏介绍：一人一枪的防火线，抵御敌人不断补充的兵力进攻，第三关开始有飞机空袭，注意！
Game: one shot on the fire lines, continuously add strength to resist the enemy attack, the third air strike aircraft begins, attention.
在连接UPS的交流引入线时，火线零线不允许接反（注意某些UPS还有相序之分）。
UPS to connect the exchange to introduce line, the battle line is not allowed to access anti-Line (Note that there are certain sequence of UPS's).
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