肾小球滤过率是指
A.每侧肾脏每分钟生成的原尿量
B.每分钟每侧肾脏的血浆流量
C.每分钟两侧肾脏的血浆流量
D.两侧肾脏每分钟生成的原尿量
E.肾血浆流量/肾血流量
参考答案:D
One night all of his ________ signs began to drop sharply and the head teacher, who believe in
the concept that no one should die alone, began to call his family members to the hospital. [ ]
A. common
B. obvious
C. vital
D. ordinary
等截面直杆在两个外力的作用下发生轴向压缩变形时,这对外力所具备的特点一定是等值、()。
A.反向、共线
B.反向,过截面形心
C.方向相对,作用线与杆轴线重合
D.方向相对,沿同一直线作用