对于碳化焰，乙炔过剩，焊接时会增加焊缝含（）量。
A、氢
B、氧
C、铁
参考答案：A
She fulfilled her ________ to become the first woman to run the 10,000 metres in 30 minutes.[ ]
A. intention
B. attempt
C. attention
D. ambition
其他纺织材料制机织非绣制标签等
ttention