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徐工QY85KC起重機的優點如下：1. 高承載能力：QY85KC起重機具有較高的承載能力，可以進行大型和重型物體的起重和運輸。2. 高效率：該起重機采用先進的液壓系統和自動化控制技術，可以快速、準確地完成各種起重工作。同時，它還具有快速搭設和拆卸的能力，提高了工作效率。3. 靈活性：QY85KC起重機具有多段伸縮臂和多段伸縮式液壓腳架，可以根據工地的具體情況進行靈活調整和操作。這使得它可以適應各種不同的工作環境。4. 安全性：徐工QY85KC起重機配備了多種安全裝置，如重載限制器、高度限位器、傾覆報警系統等，保證了操作的安全性和可靠性。此外，起重運輸過程中也有防護裝置，確保操作人員和周圍環境的安全。5. 舒適性：該起重機的駕駛室采用人性化設計，具有寬敞、舒適的工作環境，減輕了駕駛員的勞動強度，并提高了工作的效果。總結來說，徐工QY85KC起重機具有高承載能力、高效率、靈活性、安全性和舒適性等優點，適合用于各種起重工作場合。

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.