构成基底动脉环（Willis环）的血管有（）。 ["左、右大脑后动脉","前交通动脉","后交通动脉","大脑中动脉","大脑前动脉"]
下列不是腕关节注射的进针途径的是（）。 ["远侧尺桡关节注射","桡骨茎突注射","关节综合区注射","掌侧掌指关节近端注射","腕管注射"]
新鲜脱位是指关节脱位后时间未满（） ["1周","2周","3周","4周","5周"]
腰丛神经损伤是下列哪项的并发症？（） ["第3腰椎横突注射","棘突上滑囊注射","腰椎关节突关节注射","棘突间韧带注射","肋横突关节注射"]
锁骨下动脉分支有（）。 ["椎动脉","胸廓内动脉","肋间动脉","甲状颈干","肋颈干"]
请总结归纳QFP、BGA、CSP、MCM等封装方式各自的特点。
