储量依据地质可靠程度和可行性评价阶段不同又可分为（）和（）。
参考答案：可采储量；预可采储量
According to John P. Caskey, pawnshops are important because
A．they provide great dollar value to the poor
B．they make big loans
C．they are serving the majority of the population
D．they make a, large number of loans to the poor
缺乏沟通和未解决的争端意味着（）。
A.项目复杂
B.进度计划失败
C.项目团队效率低下
D.项目团队的职责界定不明确
