人体中的强回声组织声衰减极高并伴有声影，以下哪个不是() ["A．软骨","B．钙化","C．肺","D．瘢痕","E．结石"]
不属于腔内探头的是() ["A．阴道探头","B．直肠探头","C．食管探头","D．胃镜探头","E．普通扇型探头"]
超声引起细胞和组织发生变化的机制是() ["A．振动和辐射","B．吸收和反射","C．直接和间接","D．热和空化效应","E．以上均不是"]
远视眼的远点在()近视眼的远点在()正视眼的远点在() ["A．无限远","B．眼前某一点","C．眼后","D．视网膜上","E．以上都不是"]
角膜的屈光力约为()晶状体的屈光力约为() ["A．43D","B．42D","C．41D","D．19D","E．18D"]
近视的英文单词是()正视的英文单词是()屈光不正的英文单词是()远视的英文单词是()散光的英文单词是()
