题型:选择题 Another two months will be needed before the bridge _______.A.completesB.is completedC.has completedD.will be completed 查看答案
题型:单项选择题 B型题 浸润麻醉时向局部麻醉药中加入肾上腺素的目的是()A.对抗局部麻醉药的扩血管作用以防止血压下降B.防止麻醉中低血压C.预防过敏性休克D.延长局部麻醉药持续时间E.防止出血 查看答案