A、Vdaf B、Vd C、Vad
A.±1mm B.±05mm C.±2mm
A.20% B.10％ C.5％ D.1％
A、小于20mm B、小于或等于25mm C、小于15mm
A.10x10x55mm B.7x10x55mm C.5x10x55mm D.以上均不是
