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[单选题]
金属全框眼镜装片时,镜圈锁紧管的间隙不得大于()。
A.0.1mm
B.0.2mm
C.0.3mm
D.0.5mm
查看答案
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A.0.1mm
B.0.2mm
C.0.3mm
D.0.5mm
A.超声镜、障碍感应发生器、激光手杖
B.超声手杖、字声机、触觉助视器
C.声纳眼镜、字声机、触觉助视器
D.超声手杖、超声镜、激光手杖
A . 0.01~0.02mm
B . 0.2~0.4mm
C . 0.1~0.4mm
D . 0.2~0.6mm
A.10
B.15
C.20
D.25