21.成牛手術前施行之硬膜外麻醉(epidural anesthesia),可於2% lidocaine中添加多少mg/kg之xylazine,以延 長麻醉作用時間?
(A)0.01
(B)0.03
(C)0.1
(D)0.3
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統計: A(734), B(682), C(619), D(186), E(0) #1839369
統計: A(734), B(682), C(619), D(186), E(0) #1839369