A.向心性收縮 B.離心性收縮 C.等長(zhǎng)收縮 D.等速收縮 E.以上都不對(duì)
A.副神經(jīng) B.胸前神經(jīng) C.肩胛背神經(jīng) D.胸長(zhǎng)神經(jīng) E.肌皮神經(jīng)