單項(xiàng)選擇題
A.0.2 B.0.3 C.0.4 D.0.5
A.2 B.3 C.4 D.5
A.1%~4% B.2%~5% C.3%~6% D.4%~7%
A.1mm~5mm B.1mm~4mm C.1mm~3mm D.1mm~2mm
A.1.0 B.1.2 C.1.5 D.2.0
A.M5 B.M10 C.M15 D.M20
A.3 B.4 C.5 D.6
A.100~200 B.150~250 C.200~300 D.250~350
A.30 B.40 C.50 D.60
A.30;30 B.40;40 C.50;50 D.60;60