颜色为黄白色的水垢可能是()
A.硫酸盐水垢
B.碳酸盐水垢
C.硅酸盐水垢
D.氧化铁垢
参考答案:A
“4□□”是一个三位数,而且是3的倍数.这个三位数最小是______.
People give their money or get their money from .
A.me, I
B.I,me
C.I,I
D.me,me