糖尿病的基本生理变化是
A.垂体分泌功能降低
B.糖皮质激素分泌过多
C.醛固酮分泌过多
D.胰岛素分泌绝对或相对不足
E.生长激素分泌过多
参考答案:D
构造原理揭示的电子排布能级顺序,实质是各能级能量高低。若以E(nl)表示某能级的能量,以下各式中正确的是
A.E(5s)>E(4f)>E(4s)>E(3d)
B.E(3d)>E(4s)>E(3p)>E(3s)
C.E(4s)<E(3s)<E(2s)<E(1s)
D.E(5s)>E(4s)>E(4f)>E(3d)
During the month of October the Sun’s declination is().
A.north and increasing
B.north and decreasing
C.south and increasing
D.south and decreasing