[填空题] 注射模的浇注部分是引导从注塑机喷嘴射入的熔融塑料顺利进入并充满各（）的通道。

体量 Which three of these are optical channel data unit （ODU） overhead fields？ （） ["general communication channel 0 （GCC0）","section monitoring","reserved （RES）","general communication channels 1 and 2 （GCC1 GCC2）","tandem connection monitoring activation deactivation （TCM ACT）"] 大摆锤与以下哪种设备是同一系列的。（） ["太空船","飞毯","观览车","海盗船"] 虽然情报信息在侦查领域得到广泛应用，但总体仍处于粗放、单一经营状态。 Refer to the exhibit.How many broadcast domains exist in theexhibited topology？（） ["one","two","three","four","five","six"] 注射模的浇注部分是引导从注塑机喷嘴射入的熔融塑料顺利进入并充满各（）的通道。