题型:选择题 9. Great changes ______ in our school in the past 5 years.A.took placeB.were taken placeC.have taken placeD.have been taken place 查看答案
题型:多项选择题 根据《通信设备安装工程施工监理暂行规定》(YD5125-2005),工程造价控制中,凡涉及合同以外的()等签证,监理工程师应审核无误后,报总监理工程师签认。A.停工B.窝工C.用工D.材料代用和材料追加 查看答案