肿瘤较大,出血、坏死和钙化多见,所以病灶往往密度不均,增强扫描不均匀强化() ["A.嗜铬细胞瘤
","B.肾上腺转移瘤
","C.肾上腺囊肿
","D.肾上腺皮质腺癌
E.肾上腺腺瘤"]
正位X线片上,正常肱骨小头骨骺略似()。 ["圆形","半月形","方形","三角形","椭圆形"]
总伸长即是()。 ["弹性伸长","非比例伸长","弹性伸长加非比例伸长"]
正位X线片上,有纵轴旋转移位时,肱骨小头骨骺变为()。 ["圆形","半月形","方形","三角形","椭圆形"]
侧位X线片上,骨折块翻转移位后,肱骨小头骨骺变为()。 ["圆形","半月形","方形","三角形","椭圆形"]
用案例来说明旅游对环境的积极影响?