尿中管型的蛋白质来自何处( )
A．输尿管B．肾小球及肾小管C．脱落的上皮D．红细胞E．蛋白质
参考答案：B
依据现行《建筑设计防火规范》的规定，仅限通行非危险化学品等机动车，封闭段长度（）的隧道为三类隧道。
A.大于3000m
B.大于1500m，小于等于3000m
C.大于500m，小于等于1500m
D.小于等于500m
You are getting fatter and fatter. You should eat _______ food and take _______ exercise. [ ]
A. less, less
B. more, more
C. more, less
D. less, more
