There is _____ apple and _____ pear in t 发布时间:2017-04-14 23:12 │ 来源:www.tikuol.com 题型:选择题 问题: There is _____ apple and _____ pear in the box.[ ]A. a , a B. an, an C. an, a
题型:选择题 关于视觉诱发电位(VEP)的描述错误的是()A.记录的是视网膜的电活动B.反映视网膜、视路和视觉中枢的功毹状态C.分为闪光视觉诱发电位和图形视觉诱发电位D.可用于视路病变的诊断E.可用于视中枢病变的诊断 查看答案
题型:选择题 A long splice in a line().A.is used in running riggingB.doubles the size of the lineC.is only used on fiber ropeD.is very weak 查看答案