單項(xiàng)選擇題
A.Φ54mm B.Φ55mm C.Φ50mm
A.2mm B.3mm C.4mm
A.3~8mm B.5~15mm C.8~20mm
A.52±1.4 B.52±1.5 C.58±1.4
A.20mm B.30mm C.40mm
A.30% B.50% C.90%
A.1mm B.2mm C.3mm
A.250mm×204mm×12mm B.204mm×204mm×12mm C.250mm×250mm×12mm
A.3mm B.4mm C.5mm
A.A302 B.J422 C.J506