茕茕孑立，形影相吊
网络运营者应当加强对其用户发布的信息的管理，发现法律、行政法规禁止发布或者传输的信息的，应当立即停止传输该信息，采取（）等处置措施，防止信息扩散，保存有关记录，并向有关主管部门报告。 ["撤回","更改","消除","删除"]
跨平台性强：
Regarding PAR (Positive Acknowledgement and Re-transmission), which of the answer choices below are correct?（） [" The source device will only retransmit lost packets on the request of the destination device."," The source device starts a timer when it sends a segment and retransmits if an acknowledgment is not received before the timer expires."," The destination device acknowledges receipt of a segment by sending a packet with a new sequence number and the ACK bit sent."," The destination device acknowledges receipt of a segment by sending a packet that indicates the next sequence number it expects."," If the destination device does not receive a segment, all segments are retransmitted."," The source device keeps a record of all segments sent and expects and acknowledgment of each."]
简述处理反移情的注意事项。
补色与补色关系对比
