工程项目施工成本管理的基础工作包括( )。
A.建立成本管理责任体系
B.建立企业内部施工定额
C.及时进行成本核算
D.编制项目成本计划
E.科学设计成本核算账册
参考答案:A,B,E
互感现象只适用于线圈附近没有铁磁材料的()电路。
A.容性
B.感性
C.线性
D.非线性
A wildlife preserve is being planned for 3,000 rhinoceroses. The preserve is to contain a total of 10,000 acres of watering area, plus 100 acres of grazing area for each rhinoceros. If the number of rhinoceroses is expected to increase by 10 percent, how many thousand acres should the preserve have in order to provide for the increased population ?()
A.340
B.330
C.320
D.310
E.300