单项选择题
抹涂可以得到表面质量良好的涂料层。采用水基涂料时,涂料层中载体含量少,易于晾干。
判断题抹涂可以得到表面质量良好的涂料层。采用水基涂料时,涂料层中载体含量少,易于晾干。
Mr. Smith said that he did not want to ______ any furth...
单项选择题Mr. Smith said that he did not want to ______ any further responsibilities. A. get on B. look up C. put up D. take on
防水板焊接要求每( )检查1处焊缝。A.200mB.500mC.1000mD.5000m
单项选择题防水板焊接要求每( )检查1处焊缝。