胆囊内可移动、无声影的病变可能是（）①泥沙样小结石②胆泥③出血④寄生虫 ["①","①②","①②③","④","以上均可能"]
男孩，8岁。临床表现与脑电图诊断为颞叶癫痫，CT检查无异常，其首选的抗癫痫药物应是：（） ["丙戊酸钠","卡马西平","硝基西泮","氯硝西泮","乙琥胺"]
临床上哪项是衡量一个牙是否为良好基牙的重要指标（） ["牙根分叉度","牙根长度","牙周膜面积","牙根数目","牙槽骨的密度"]
称脾为"气血生化之源"的理论基础是（） ["脾主运化水液","脾主运化水谷","脾气主升","脾主统摄血液","脾喜燥恶湿"]
表现为刺激性咳嗽，伴有胸痛多见于（） ["金黄色葡萄球菌肺炎","肺炎链球菌肺炎","支原体肺炎","腺病毒肺炎","衣原体肺炎"]
简述LDTIV型凝结水泵的结构形式。
