摘 要:近年来，随着我国经济快速发展人民生活水平不断提高，全国各地掀起建筑热朝，大量的建筑不断增加，
作者&投稿：颜郊 （若有异议请与网页底部的电邮联系）
解答：解：（1）受力分析如右图所示，竖直方向：FNcosθ=mg+Ffsinθ；水平方向：FNsinθ+Ffcosθ=mv2r，又Ff=μFN，可得v=(sinθ+μcosθ)grcosθ?μsinθ．（2）代入数据可得：v=14.6 m/s答：（1）为使汽车转弯时不打滑，汽车行驶的最大速度是(sinθ+μcosθ)grcosθ?μsinθ．（2）弯道部分汽车行驶的最大速度是14.6 m/s．
A、电梯向上启动时，电梯是向上加速的状态，故而所受的合力方向是向上的，所以此时支持力是大于重力的，故此选项是正确的．B、电梯匀速运动时所受的力是平衡力，所以重力和支持力的大小是相等的，故此选项是错误的．C、电梯向下启动时，是向下加速的过程，所受的合力方向是向下的，所以此时支持力是小于重力的，故此选项是正确的．D、电梯在向下减速时，所受的合力方向向上，所以支持力是大于重力的，故此选项是正确的．故选A、C、D．
Pick to: in recent years, with China's rapid economic development and people's living level increases developments across the country toward building thermal, a large number of building continuously increased, but the construction is also a minsheng industry, because in construction must pay attention to the construction of quality management, ensure the safety qualified. This paper expounds the construction process quality control and management, in view of the construction process of this important link the quality problems occured raises some opinions.Keywords: construction management, Quality monitoring; Construction projects
Abstract: in recent years, with fast economic growth and improvement of people's living standard, construction industry has seen unpresedented prosperity with more and more buildings being mounted nationawide. However, attention must be made to quality and management to ensure the safety of buildings. An analysis is made in this paper on the quality supervision and management of buildings and solutions are put forward.
Key words: construction management quality supervision buildings
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