促进血清钾进入细胞内可用()。纠正代谢性碱中毒可用()。
A.5%碳酸氢钠或11、2%乳酸钠
B.25%葡萄糖溶液加胰岛素
C.两者均可
D.两者均不可
参考答案:C,A
While private cars are bringing us________, they may also cause more traffic accidents and pollution.[ ]
A. administration
B. credit
C. convenience
D. movement
解下列方程:
(1)3(x-2)2=x(x-2); (2)x2-4x+1=0.