单项选择题
A.135.8mpm B.117.5mpm C.150.8mpm D.160.8mpm
A.0.5mm B.0.7mm C.0.8mm D.0.9mm
A.0.1° B.0.2° C.0.3° D.0.4°
A.20mm B.50mm C.30mm D.35mm
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