超短波疗法的治疗作用有()
A.扩张血管,改善血循
B.镇痛
C.缓解平滑肌、横纹肌痉挛
D.增强免疫功能
E.促进组织修复
参考答案:A, B, C, D, E
Local bus can reduce the occupation time of CPU. For the EISA local bus, commonly the time can be reduced to
A.42%
B.22%
C.12%
D.2%
裸子植物的大孢子可发育成单倍的胚乳。