会计档案保管期限种类有哪些?
参考答案:
会计档案保管期限分为永久保管和定期保管两种,其中,定期保管又分为十五年、五年和三年三种。
Last Summer vacation I paid a visit to Xishuangbanna, and was attracted by its _____ beauty of nature,
seemingly untouched by human footprints.[ ]
A. primitive
B. ancient
C. unusual
D. favourite
超声洁牙机洁牙的优势不包括
A.冲洗作用
B.降低交叉污染
C.除石效率高
D.视野清楚
E.创伤小