支托凹底与基托长轴的角度为A.20° B.10° C.30° D.0° E.40°

admin2020-12-24 15

问题

支托凹底与基托长轴的角度为

选项 A.20°
B.10°
C.30°
D.0°
E.40°

答案A

解析

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