31.當肺處於功能肺餘量(functional residual capacity)時,肺臟與胸壁回彈(recoil)方向分別為:
(A)肺臟向外;胸壁向外
(B)肺臟向外;胸壁向內
(C)肺臟向內;胸壁向外
(D)肺臟向內;胸壁向內
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統計: A(50), B(135), C(267), D(63), E(0) #2039388
統計: A(50), B(135), C(267), D(63), E(0) #2039388