电缆穿越农田时，敷设在农田中的电缆埋设深度不应小于（）m。 ["0.5","1","1.5","2"]
下列选项中，不属胃阴不足型呕吐主症的是（） ["呕吐反复，时作干呕","似饥而不欲食","嗳气吞酸","口干咽燥","舌红少津脉细"]
呕吐的病因不包括（） ["外邪犯胃","饮食不节","情志失调","病后体虚","跌仆损伤"]
变压器油在变压器内主要起（）作用。 ["绝缘","冷却和绝缘","消弧","润滑"]
治疗痞满痰湿中阻证的主方是（） ["二陈平胃汤加减","保和丸加减","泻心汤合连朴饮加减","越鞠丸合枳术丸加减","枳实消痞丸加减"]
简述偏心辊子整形器的结构及用途。
