黑龙江省是中国东北边陲的多民族省份。除汉民族外,还有满、蒙古、朝鲜、回、达斡尔、鄂伦春、赫哲、鄂温克、锡伯、柯尔克孜等世居、久居的少数民族。
参考答案:对
How is it that different cells can respond in different ways to exactly the same signaling molecule even when they have identical receptors
在过量强碱液中可转变为醇式或醛式的是()
A.小檗碱
B.东莨菪碱
C.山莨菪碱
D.阿托品
E.莨菪酸