Water, _______enough, can change into va

分解因式：x²﹣4x+4=（    ）。

简述手持补票机主界面中6.综合模块的功能。

慢性肾小球病变时，肾皮质回声明显增强，应选择与肾皮质回声作对比的脏器是（）。

A.肝脏

B.脾脏

C.胰腺

D.对侧肾皮质

E.肾周脂肪

— Did you get any fish when you were fishing yesterday?

— Yes. I got            than any of them. [ ]

A. many

B. many more

C. much more

D. the most

哪种色彩模式是独立于设备的色彩模式（）

A、CMYK

B、RGB

C、Lab