A.K
B.F
C.E
D.Z

A.10
B.12
C.14
D.16

A.0.1
B.0.2
C.0.05
D.0.02

A.-50~+50
B.-25~+25
C.0~+50
D.0~25

A.-50~+50
B.-25~+25
C.0~+50
D.0~25

A.弦与弧外侧最大自然矢高不大于25mm
B.弦与弧内侧最大自然矢高不大于25mm
C.弦与弧中心最大自然矢高不大于25mm
D.弦与弧中心最大自然矢高不大于20mm

A.8.74mm
B.8.47mm
C.8.60mm
D.6.50mm

A.6.20mm
B.8.60mm
C.10.80mm
D.11.10mm

A.三根钢丝捻制的钢绞线
B.三根钢丝捻制又经模拨的钢绞线
C.三根刻痕钢丝捻制的钢绞线
D.三根加粗钢丝捻制的钢绞线

A.17.2mm
B.9.5mm
C.7mm
D.1×7mm

A.500h
B.800h
C.1000h
D.1200h