A.1% B.0.90% C.0.80% D.0.70%
A.≥20mm B.≥30mm C.≥35mm D.≥40mm
A.29420N±1961N B.49033N±3266N C.＞88254N D.88420N±1961N
A.160° B.170° C.180° D.190°
A.重力 B.压力 C.摩擦力 D.阻力
