49.心室等容收縮期(isovolumetric ventricular contraction),心室內的壓力變化為何?
(A)先上升、後下降
(B)先下降、後上升
(C)上升
(D)下降
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統計: A(340), B(216), C(591), D(103), E(0) #1739560
統計: A(340), B(216), C(591), D(103), E(0) #1739560