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评估广告策划活动效果的客观标准是经济效益.社会效益和心理学,以社会效益为主。
根据热电势大小来衡量温度高低的温度计是()
“阳中求阴”的理论依据是( )。
自动闭塞区段,接车站接车进路或通过进路已(),调度集中系统在出发站的()信号机、一离去信号机和二离去信号机发送列车接车进路预告信息。
工程建设项目合同制订阶段的管理,主要包括从()、中标、合同谈判到确定承包商的整个过程中涉及合同条件和内容准备的相关管理活动。
绝大多数间质性疾病串患者,X线胸片显示()
图示平面桁架的尺寸与荷载均已知。其中,杆1的内力F sl为:()
某山地地质构造形态以背斜及向斜为主,河流走向与向斜轴基本一致,该山地宜称为()。
药品标准是国家对药品质量及检验方法所作的技术规定,是药品生产、经营、使用、检验和监督管理部门共同遵循的法定依据。
分析背景,确定降水井布置的形式及要求。
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