影响小企业道德规范建立的因素是什么？
You need to change the definition of an existing table. The COMMERCIALS table needs its DESCRIPTION column changed to hold varying length characters up to 2000 bytes. The column can currently hold 1000 bytes per value. The table contains 20000 rows. Which statement is valid?（） [" ALTER TABLE commercials MODIFY (description CHAR2(2000));"," ALTER TABLE commercials CHANGE (description CHAR2(2000));"," ALTER TABLE commercials CHANGE (description VARCHAR2 (2000));"," ALTER TABLE commercials MODIFY (description VARCHAR2 (2000));"," You cannot increase the size of a column if the table has rows."]
起重钢绳虽无断丝，但每根钢丝磨损或腐蚀超过其直径多少应报费（）。 ["50%","40%","30%"]
公务员和参照公务员法管理的工作人员养老保险的办法由公务员管理局规定。
小企业如何综合利用各种法律，以达到最佳经营效益？
微量元素
