20.以下何者為局胛下壓(scapular  depression)肌肉?
(A)棘下肌(infraspinatus)
(B)下胸大肌(lower pectoralis major)
(C)闊背肌(latissimus dorsi)
(D)下斜方肌(lower trapezius)

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統計： A(3), B(0), C(6), D(20), E(0) #2862853