Small welding current is generally recommened for arc cold welding of castings due to （ ）.
A: Small melting depth
B: Small dilution
C: Small heat input
D: Small welding stress
A: Small melting depth
B: Small dilution
C: Small heat input
D: Small welding stress
举一反三
- The welding operations of welding robots mainly include ( ) A: spot welding B: arc welding C: flat welding D: Continuous welding
- Welding processes are generally classified into three basic categories: fusion welding、solid-state welding and .
- They have() to cover both of them. A: too small an umbrella B: very small an umbrella C: a too small umbrella D: a small umbrella
- In front of the farmhouse ______. A: does a small boy sit B: did a small boy sit C: sit a small boy D: sat a small boy
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