来源于蔷薇科植物的中药材有() ["葶苈子","山楂","木瓜","苦杏仁","金樱子"]
引起着色性干皮病的原因是()。 ["DNA上TT二聚体的切除修复系统有缺陷","细胞膜通透性缺陷引起迅速失水","紫外线照射诱导了有毒性的前病毒","温度敏感性转移酶失活","维生素B1缺乏"]
乌梅的性状鉴别特征为() ["呈扁球形或类球形","表面棕黑色至乌黑色,皱缩不平","果核表面有凹点","果核具明显的沟状边缘","果肉味极酸"]
手机显示有信号但是打不通电话如何处理?
以桨果入药的中药材有() ["五味子","山楂","枸杞子","乌梅","女贞子"]
什么叫功率控制?