全国CO_2气体保护焊邀请赛理论考试试题

• 出 处: 机械工人
• 发表日期: 1989年12期
• 关键词: 气体保护焊 短路过渡 判断题 电弧燃烧 理论考试 左焊法 伸出长度 焊接速度 短路电流 焊炬

说明:考卷内所涉及的焊接方法都属于应用实心焊丝,短路过渡的半自动 CO_2气体保护焊。一、是非判断题(共12分)认为题意正确,在题后括号内打“√”;认为题意不正确,在括号内打“×”。每一正确答案给1分;每一错误答案倒扣1分;不答不计分。

Note: The welding methods involved in the examination papers belong to semi-automatic CO2 gas shielded welding with solid wire and short-circuit transition. First, the non-judgments (12 points) that the problem is correct, in the brackets after the title “√”; that the problem is not correct, in the brackets to play “×”. 1 point for each correct answer; 1 point for each incorrect answer; do not answer no points.