利勃海尔LTM1070-4.2起重机的优点包括：1. 大承载能力：该起重机具有70吨的最大起重能力，可以应对各种重型吊装任务。2. 长臂距离：起重机的主臂长度为50米，辅助臂长度为16米，可覆盖较远的作业范围。3. 灵活性：该起重机具有多种工作模式和工作范围的选择，可灵活适应不同的工地需求。4. 操控简便：起重机配备了先进的操控系统，包括液压系统、电子控制系统等，使操作更加简单和精确。5. 高效率：起重机采用了先进的液压系统和动力系统，提供了更高的工作效率和能源利用率。6. 安全性高：起重机配备了多种安全装置，包括重载保护、倾倒保护、抗风保护等，确保操作安全可靠。7. 可拆装：起重机结构设计合理，可方便进行拆装和运输，适用于各种作业环境。总的来说，利勃海尔LTM1070-4.2起重机具有承载能力强、灵活性高、操控简便、高效率和安全性高等优点，适用于各种大型物体的吊装作业。

The advantages of Liebherr LTM1070-4.2 crane include:1. large load capacity: the crane has a maximum lifting capacity of 70 tons, which can cope with a variety of heavy lifting tasks.2. long jib distance: the crane's main jib length of 50 meters, the auxiliary jib length of 16 meters, which can cover a longer working range.3. flexibility: the crane has a variety of working modes and working range options, which can flexibly adapt to different site requirements.4. easy operation: the crane is equipped with advanced control systems, including hydraulic systems and electronic control systems, making the operation simpler and more accurate.5. high efficiency: the crane adopts advanced hydraulic systems and electronic control systems, which make operation easier and more precise. It can be flexibly adapted to different site requirements.4. Easy operation: the crane is equipped with advanced operation system, including hydraulic system, electronic control system, etc., which makes the operation easier and more precise.5. High efficiency: the crane adopts advanced hydraulic system and power system, which provides higher efficiency and energy utilization.6. High safety: the crane is equipped with a variety of safety devices, including heavy load protection, tipping protection, wind protection, etc., to ensure safe and reliable operation. 7. Detachable: the crane structure is well-designed, which can be easily disassembled and transported, and is suitable for a variety of operating environments. Overall, Liebherr LTM1070-4.2 crane has the advantages of strong loading capacity, high flexibility, easy maneuvering, high efficiency and high safety, which is suitable for lifting and loading of various large objects.