成人脑桥小脑角最常见的肿瘤是（） ["神经鞘瘤","脑膜瘤","颅咽管瘤","髓母细胞瘤","胶质瘤"]
如图示，硬膜外穿刺时经历哪几层组织（）。 ["皮肤","皮下组织","棘上韧带","棘间韧带","黄韧带"]
正常小儿前囟闭合的年龄，正确的是（） ["1～1.5个月","3～4个月","1～1.5岁","6～12个月","1.5～2岁"]
可合并白血病的淋巴瘤主要是（） ["淋巴细胞为主型霍奇金病","小淋巴细胞性淋巴瘤","免疫母细胞性淋巴瘤","伯基特淋巴瘤","骨髓瘤"]
脑干最常见的肿瘤是（） ["神经鞘瘤","脑膜瘤","颅咽管瘤","髓母细胞瘤","胶质瘤"]
戴无菌手套
