总账、日记账和多数明细账应每年更换一次。
参考答案：对
解析：[考点] 会计账簿的更换 根据会计法律制度的规定，总账、日记账和多数明细账应每年更换一次。
一组数据5，5，5，5，5的方差是（ ）．
Although police could be seen everywhere, they seemed to be searching the houses almost ________.[ ]
A. at ease
B. at random
C. at risk
D. at length
