Self loading and unloading fire trucks are a flexible and versatile fire vehicle with the following usage characteristics:

1. 载重能力大：自装卸式消防车采用专门设计的卸载系统，能够承载大量的灭火设备和消防装备，如水泵、水罐、灭火剂等，并具备较大的有效工作半径。

1. Large load-bearing capacity: Self loading and unloading fire trucks adopt a specially designed unloading system, which can carry a large number of fire extinguishing equipment and equipment, such as water pumps, water tanks, fire extinguishing agents, etc., and have a large effective working radius.

2. 快速反应：自装卸式消防车具备快速部署的能力，可以在短时间内将灭火设备装载到车辆上，然后快速驰援到事故现场。这使得它对应急灭火任务非常适用，能够迅速响应火灾事故，有效控制火势。

2. Quick response: Self loading and unloading fire trucks have the ability to quickly deploy and load fire extinguishing equipment onto the vehicle in a short period of time, then quickly rush to the scene of the accident. This makes it very suitable for emergency firefighting tasks, able to quickly respond to fire accidents and effectively control the fire.

3. 灵活多样：自装卸式消防车可根据实际需求进行灵活配置和改装，以适应不同的灭火工作任务。例如，在农村地区，可以增加装载喷雾器和绳索等设备，以应对山林火灾；在城市，可以装载高压水炮和泡沫发生器，以进行大面积火灾的扑救。

3. Flexible and diverse: Self loading and unloading fire trucks can be flexibly configured and modified according to actual needs to adapt to different firefighting tasks. For example, in rural areas, equipment such as spray and ropes can be added to deal with forest fires; In the city center, high-pressure water cannons and foam generators can be loaded to put out large-scale fires.

4. 多用途性：自装卸式消防车可以兼具救援功能，除了进行灭火作业外，还可用于人员救援、物资运输等任务。其灵活的设计和多功能配置使得它在各种复杂环境下都能发挥作用。

4. Multipurpose: Self loading and unloading fire trucks can also have rescue functions. In addition to carrying out firefighting operations, they can also be used for tasks such as personnel rescue and material transportation. Its flexible design and multifunctional configuration enable it to function in various complex environments.

5. 操作简便：自装卸式消防车采用智能化的控制系统和操作界面，使得操作人员可以轻松掌握和操作车辆。这有助于提高救援效率并确保操作人员的。

5. Easy to operate: The self loading and unloading fire truck adopts an intelligent control system and operation interface, making it easy for operators to master and operate the vehicle. This helps to improve rescue efficiency and ensure the safety of operators.

总之，自装卸式消防车凭借其载重能力大、快速反应、灵活多样、多用途性和操作简便等特点，成为一种重要的消防救援车辆，广泛应用于消防救援工作中。

In short, self loading and unloading fire trucks have become an important type of fire rescue vehicle due to their large load-bearing capacity, fast response, flexibility, versatility, and easy operation, and are widely used in fire rescue work.