建设项目风险可以划分为()。
A.开发阶段风险
B.项目试生产阶段风险
C.生产经营阶段风险
D.项目开发前期准备阶段风险
E.项目竣工结算阶段风险
参考答案:A, B, C
Iraq has _____ too many wars since 1990, making his people _____ a lot. [ ]
A. got through; pay
B. looked through; face
C. gone through; suffer
D. passed through; destroy
常用的沉淀池设备基本上可分为()两大类。
A.反应池和沉淀池
B.絮凝池和沉淀池
C.澄清池和沉淀池
D.沉砂池和沉淀池