12315信息化网络建设中主要负责下列哪些内容（） ["指挥调度和处理系统","商品质量监测","数据的统计分析","商品安全信息监控"]
主站与RTU的对时报文出错，是RTU时钟不准的主要原因。
When receiving a distress alert, the SAR authorities ashore and the ships in the vicinity of the ship in distress will（）in a coordinated search and rescue operation with the minimum delay. ["assist","send a rescue vessel","search the distress area","reach the distress position at once"]
复述策略包括（） ["科学有效地复习","试图回忆","过电影","利用记忆中的系列位置效应","调动多种感官参与学习"]
通道环路试验可以在主站端进行，不可以在厂站端进行。
什么是聚酰胺纤维？
