[单选]

Refer to the exhibit:The technician wants to upload a new IOS in the router while keeping the existing IOS. What is the maximum size of an IOS file that could be loaded if the original IOS is also kept in flash?（）

《动车组列车服务质量规范》除携带铁路电报、客运记录、车内补票移交报告外，车上不携带其他纸质资料台账。 净出口为正值时，被称为（）。 A）贸易赤字。 B）贸易盈余。 C）贸易逆差。 D）入超。 财务出纳人员未按规定要求取、送款（1万元以下要有2人，1万元以上要派专车3人，5万元以上应由3人以上至少有1名治安保卫人员），属于（）问题。 红线。 A1。 A2。 B。 攻击性行为 家蚕为什么各龄期要有不同的温湿度？

Refer to the exhibit:The technician wants to upload a new IOS in the router while keeping the existing IOS. What is the maximum size of an IOS file that could be loaded if the original IOS is also kept in flash?（）