A.焊条角度为30°~40°，焊炬角度为60°~70°
B.焊条角度为60°~70°，焊炬角度为30°~40°
C.焊条角度为30°~40°，焊炬角度为40°~50°

A.7mm~15mm
B.15mm~25mm
C.25mm~30mm

A.40min
B.60min
C.80min

A.焊接电流被分流
B.焊接时间会缩短
C.两个焊点的热影响

A.20A~30A
B.30A~40A
C.40A~50A

A.10°~15°
B.20°~40°
C.40°~60°

A.板厚和电流
B.板厚和电压
C.电压和电流

A.前者为2mm，后者为5mm~8mm
B.前者为3mm，后者为5mm~8mm
C.前者为3mm，后者为4mm~8mm

A.5~15倍
B.30~40倍
C.15~30倍

A.10mm
B.20mm
C.30mm