葛根的性状特征是() ["A.表面具环节,有纵纹及须根痕","B.外皮淡棕色,切面黄白色,纤维性强","C.质脆,易折断","D.类球形或椭圆形,表面黄白色或淡黄棕色,破断面黄白色,粉性,有多数细孔","E.气芳香,味苦、微辛"]
多数黄酮类化合物与三氯化铁反应呈() ["黄色","红色","棕色","蓝色","黑色"]
肉眼血尿是指每升尿内含有血量超过()。 ["1ml","2ml","3ml","4ml","5ml"]
在MGB1420万能磨床中,温度补偿电阻采用()。 ["A、150欧","B、200欧","C、390欧","D、500欧"]
槲皮素在结构分类上属于() ["黄酮类","黄酮醇类","二氢黄酮类","异黄酮类","黄烷醇类"]
《供电监管办法》规定:电力监管机构对供电企业保障供电安全的情况实施监管。具体内容是什么?