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"]
血液、尿液、胆汁、胸腹水在人体体液中声衰减程度谁最低() ["A．血液","B．尿液","C．胆汁","D．胸腹水","E．声衰减一样"]
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() ["A．emmetropia","B．ametropia","C．myopia","D．hyperopia","E．astigmatism"]
一眼为正视眼，另眼与之度数相差最小达到多少时出现融像困难()正视眼在60岁以上约需附加()正视眼在50岁左右约需附加()正视眼在45岁左右约需附加()如一凸透镜的焦距为O.5m，则该镜的屈光力为() ["A．+1.50D","B．+2.00D","C．+2.50D","D．+3.00D","E．+4.00D"]
+4.00D()+6.00D()-8.00D()-2.00D()-5.00D() ["A．高度远视","B．高度近视","C．中度远视","D．轻度近视","E．中度近视"]
远视眼的远点在()近视眼的远点在()正视眼的远点在()
