【简答题】饿了么、美团外卖等应用属于O2O+( )模式;根据摩拜单车的开锁方式可以判断它属于O2O+( )模式。
【单选题】三 Mike is a 12⁃year⁃old boy. He 21 from New York. He is in Class 3, Grade 7. Mr Black is his class teacher. He is a good teacher. All the students of 22 class like him very much. There are for...
【判断题】半自动闭塞车站,发出须由区间返回的列车时,仍可使用半自动闭塞。()
【单选题】关于2型糖尿病的说法错误的是
A.
此型病变在于靶细胞膜上胰岛素受体数目减少或缺陷
C.
大多数病人属于自身免疫性疾病,患者血清中有胰岛素抗体
【单选题】半自动闭塞区间,发出由区间返回的列车时,其行车闭塞法是( )。