A.5 B.7 C.8 D.10
A.90°B.135°C.150°D.180°
A.65% B.70% C.75% D.80%
A.二B.三C.四D.五
A.7mm B.8mm C.9mm D.10mm
A.10mm B.9mm C.8mm D.7mm
A.700mm B.800mm C.900mm D.1000mm
A.300mm B.400mm C.500mm D.600mm
A.1/3 B.2/3 C.3/3 D.4/3
A．三顺一丁 B．一顺一丁 C．全顺 D．梅花丁
A.100% B.90% C.80% D.70%
