焊工在焊接前应该做什么?
Welding and Cutting training

Quiz
•
Life Project
•
Professional Development
•
Hard

ayam merah
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
喝咖啡
玩手机
检查焊接设备和个人防护装备
查看微信
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
火三角的组成部分是什么?
燃料、氧气、热量
氧气、甲烷、木材
燃料、木材、硫化氢
燃料、水、风、空气
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
4合1气体检测器中有哪些指标
氧气、乙炔、氮气、氢气
氧气、硫化氢、一氧化碳、低爆炸极限
氧气、硫化氢、丁烷、硫酸
氧气、氢气、氮气、甲烷
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
下列哪项属于焊接用的 PPE?
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
4. H2S气体的下限(LEL)是多少?
4%
7%
9%
10%
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
空气中氧气的范围是多少?
19,5% - 20,9%
10% - 15%
34,5% - 41,2%
51% - 57,5%
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
使用什么合适的工具来点燃气瓶火炬?
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