- 搜标题
- 搜题干
- 搜选项
单项选择题
Welding means to use (or not use) ___________(填充金属) and heat (with or without pressure) to form a continuity of solid metal between the workpieces.
Welding means to use (or not use) ___________(填充金属) and heat (with or without pressure) to form a continuity of solid metal between the workpieces.
A、fillet metal
B、filler metal
C、flat metal
D、filler medal
