A. 圆周满焊 B. 点焊固 C. 焊固 D. 点焊,大于1/3周
A. Is 50% water saturated B. Is 90% water saturated C. Temperature is greater than the dew point temperature D. Temperature is equal to,or below the dew point temperature
A. 正确 B. 错误
A. 布鲁那 B. 赞科夫 C. 卡罗尔 D. 斯金纳