【简答题】上好一堂课的具体要求主要有 ( ) 。 A. 目标明确 B. 内容正确 C. 方法得当 D. 组织有效 E. 体验积极
【单选题】I was surprised by his words ,which made me recognized ______silly mistakes I had made .
【简答题】对接连续点焊时,其正面焊珠宽度标准是( )。A. 4~6mm B. 6~ 8mm C. 8~10mm D. 9~12mm 84.对接焊时,焊件背面焊缝最大高度不超过( C )。 A.0. 5mm B.1. 0mm C.1. 5mm D.2. 0mm