徐工QY85KC起重机的优点如下：1. 高承载能力：QY85KC起重机具有较高的承载能力，可以进行大型和重型物体的起重和运输。2. 高效率：该起重机采用先进的液压系统和自动化控制技术，可以快速、准确地完成各种起重工作。同时，它还具有快速搭设和拆卸的能力，提高了工作效率。3. 灵活性：QY85KC起重机具有多段伸缩臂和多段伸缩式液压脚架，可以根据工地的具体情况进行灵活调整和操作。这使得它可以适应各种不同的工作环境。4. 安全性：徐工QY85KC起重机配备了多种安全装置，如重载限制器、高度限位器、倾覆报警系统等，保证了操作的安全性和可靠性。此外，起重运输过程中也有防护装置，确保操作人员和周围环境的安全。5. 舒适性：该起重机的驾驶室采用人性化设计，具有宽敞、舒适的工作环境，减轻了驾驶员的劳动强度，并提高了工作的效果。总结来说，徐工QY85KC起重机具有高承载能力、高效率、灵活性、安全性和舒适性等优点，适合用于各种起重工作场合。

The advantages of XCMG QY85KC crane are as follows:1. High load capacity: QY85KC crane has high load capacity, which can be used for lifting and transporting large and heavy objects.2. High efficiency: the crane adopts advanced hydraulic system and automation control technology, which can complete all kinds of lifting work quickly and accurately. Meanwhile, it also has the ability of quick erection and dismantling, which improves the working efficiency.3. Flexibility: QY85KC crane has multi-segment telescopic jib and multi-segment telescopic hydraulic tripod, which can be flexibly adjusted and operated according to the specific conditions of the construction site. This makes it adaptable to a variety of different working environments.4. Safety: XCMG QY85KC cranes are equipped with a variety of safety devices, such as heavy load limiter, height limiter, and tipping alarm system, to ensure the safety and reliability of operation. In addition, there are protective devices during lifting and transportation to ensure the safety of the operator and the surrounding environment.5. Comfort: The cab of this crane adopts humanized design with a spacious and comfortable working environment, which reduces the driver's labor intensity and improves the effectiveness of the work. To summarize, XCMG QY85KC crane has the advantages of high load capacity, high efficiency, flexibility, safety and comfort, which is suitable for all kinds of lifting workplaces.