One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； April 18th
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Multiple-choice question: Plasma cutting is a processing method that uses the heat of a high-temperature plasma arc to melt (and vaporize) the metal at the cut site of the workpiece, and then utilizes the momentum of the high-speed plasma to remove the molten metal in order to create a cut. The advantages of plasma cutting are ( ). A. High cutting efficiency B. Small heat-affected zone C. Minimal deformation D. Non-oxidized cut edges with high quality. Answer: ABCD
Plasma cutting is a machining method that uses the heat of a high-temperature plasma arc to melt (and vaporize) the metal at the cut site of the workpiece, and then utilizes the momentum of the high-speed plasma to remove the molten metal in order to create a cut. The advantages of plasma cutting are (ABCD): A. High cutting efficiency; B. Small heat-affected zone; C. Minimal deformation; D. Non-oxidized cut edges with high quality