"TestSliceApp" "Hello blank fragment" "请求网络" "释放网络" "Ping" "结果：" "划分延迟时间优先级" "划分带宽优先级" "CBS" "购买 Network Premium" "结果：请求的网络现已可用！" "结果：已请求网络！" "结果：已释放网络！" "结果：未能释放网络！！！" "结果：购买 Network Premium 时出现异常！！！" "结果：购买 Network Premium 时获得空的结果！！！" "结果：无法购买 Network Premium！！！" "结果：正在购买 Network Premium…"