客户服务中有哪些提问方式？
人民币的形式，主要包括（） 。 ["银行券","存款通货","纪念币","信用币"]
某股票拟进行现金分红，方案为每10股派息2.5元，个人所得税率为20%，该股票股权登记日的收盘价为10元，则该股票的除权价应该是（）。 ["7.50元","9.75元","9.80元","7.80元"]
What is the effect of turning on all available downstream carrier tones in a DMT DSL transmissionsystems？（） ["Downstream RS error correction effectiveness is reduced","The downstream line rate and throughput remains unchanged， but FEC efficiency is reduced","The upstream DSL bandwidth is reduced， since less carriers become available for upstream traffic","The downstream DSL bandwidth is increased"]
左翼文学的目的是：（） ["自我完善","把现存社会改造推翻，夺取政权","维护专制","以上说法都正确"]
QoS机制中的分类，采用ip数据包中的哪个字段？
