脊髓休克表现损伤平面以下肌张力低,腱反射消失,弛缓性瘫痪,一般持续几周转变为中枢性瘫痪()
A.4~5周
B.2~6周
C.1~3周
D.5~8周
E.3~4周
参考答案:B
组成蛋白质的氨基酸在自然界存在的差异是()
A.种族差异
B.个体差异
C.组织差异
D.器官差异
E.无差异
Language is ______ in that there is no logical relationship between words and their meanings.