冬期在室内贴面砖时，应对所用材料采取保温措施(各材料不得受冻)。镶贴时的砂浆温度不宜低于-5℃。( )
参考答案：错
Barack Obama told millions ______ him that his grandmother's influence on ______ he is and the way he views the world was significant.
A．watch; how
B．watching; who
C．watched; where
D．to watch; what
项目活动只有一定覆盖面而没有质量保证同样不能达到项目的（）。
A.指标
B.目标
C.标准
D.要求
E.数量
