[问答题] 简述OLT功能块的作用。

简述PPPoE的发现阶段包括的五种报文，并分别说明它们对应的代码域填充值。 应当立即报告有关部门并通报同级工会；（），同时报市总工会。 ["严重伤亡事故","一般伤亡事故","普通伤亡事故","重大伤亡事故"] 公司客户金融需求的特点不包括（）。 ["理性化","组合性","个性化","感性化"] 战略目标是企业在其战略管理过程中所要达到的市场竞争地位和管理绩效的目标。 Distilled water from an evaporator may be discharged into a potable water tank （）. ["through a detachable hose connection","after passing through an activated charcoal filter","after chemical analysis shows it is fit for consumption","through a solenoid operated three-way valve"] 简述OLT功能块的作用。