属于无机杀菌剂的是（）。
A.氯胺类
B.季胺盐
C.臭氧
D.氯酚类
参考答案：C
计算机中存储的最小单位是( )。
A．字节
B．位
C．字
D．KB
A．Retail business needs a lot of cash.
B．Whole sale business needs only credit cards.
C．Retail and wholesale businesses are quite the same.
D．Retail and wholesale businesses are done in different ways.
