（二）采取预收款方式提供建筑服务；
As one commenter wrote: "This is the most i've heard this man talk in YEARS." More of this plz.
，这一点在WPS官方版本下载中也有详细论述
«Они [запасы] будут превращены в топливо, и это топливо будет необратимым», — пояснил министр.
What if you create a truly unique routing profile that's wildly different from the common ones for which shortcuts were pre-calculated? The system is smart. If it detects that too many shortcuts (~50, for example) need on-the-fly recalculation and deviate significantly, it might determine that falling back to the original, comprehensive A* algorithm for the entire route would actually be faster than doing many small, heavily modified A* calculations.