第14题: [单项选择]The term () linguistics may be defined as a way of referring to the approach which studies language change over various periods of time and at various historical stages. A. synchronic B. diachronic C. comparative D. historical comparative 参考答案:B
第24题: [单项选择]痉挛肌电刺激疗法的频率和波宽分别为() A. 频率0.66~1Hz,波宽0.1~0.5ms B. 频率1~100Hz,波宽0.1~1ms C. 频率0.66~1Hz,波宽0.01~0.2ms D. 频率0.66~1Hz,波宽0.1~1ms E. 频率2~160Hz,波宽0.1~1ms 参考答案:A 答案解析:痉挛肌电刺激法是将波宽(0.1~0.5ms)与频率(0.66~1Hz)相同而出现时间有先后(0.1~0.3s)的两组方波,分别刺激痉挛肌及其拮抗肌,使二者交替收缩。故选A。
第25题: [单项选择]儿童脑风湿病变常出现的体征是() A. 静止性震颤 B. 动作性震颤 C. 扑翼样震颤 D. 老年性震颤 E. 小舞蹈症 参考答案:E