肾小球的球旁细胞是由出球小动脉壁上的平滑肌细胞演变而成 A.对
参考答案:错
Before the bridge was built ______ the river, the villagers had to take a boat to the other side.
A.in
B.beside
C.across
D.along
等渗尿是指尿渗量为().
A.100mOsm/(kg·H2O)
B.300mOsm/(kg·H2O)
C.500mOsm/(kg·H2O)
D.700mOsm/(kg·H2O)
E.1000mOsm/(kg·H2O)