哺乳动物体内氨的主要去路是()
A.渗入肠道
B.在肝脏合成尿素
C.经肾脏泌氨随尿排出
D.生成谷氨酰胺
E.再合成氨基酸
参考答案:B
It is said that nobody in the world can lift a subject which is ______ himself.
A.the tree times weight of
B.three times the weight of
C.as three times as heavy as
D.three times as heavier as
磁力叠加起来而出现Y轴方向的磁矢量()磁化沿着外磁场Z轴方向()静脉注入GD-DTPA()
A.横向磁化
B.顺向磁化
C.横向弛豫
D.纵向弛豫
E.纵向磁化