BOT is a popular variant of the turnkey project．For a BOT project，a firm operates a facility for a period of time after building it up before finally transferring it to a foreign company．Making profit from operating the project for a period is the major difference between BOT and the common turnkey project．Needless to say，the contractor has to bear the financial and other risks that may occur in the period of operation．
BOT是“交钥匙”工程一种流行的变通方式。在BO程条件下一家公司可以在工程竣工后运营一段时间,然后再最终转交给外国公司(2分BOT工程和普通“交钥匙”工程的一个重大区别是,承包商可以在一定期间从经营有关工程中获利。当然它同时也得承担经营期间可能发生的财务风险和其他风险。
