A.3倍 B.4倍 C.5倍 D.6倍 E.7倍
A.105° B.115° C.125° D.135° E.145°
A.鎖骨的中點(diǎn) B.關(guān)節(jié)盂 C.肩峰 D.肩胛骨喙突 E.肱骨頭