质量改进就是实施纠正和预防措施,防止潜在不合格发生。
参考答案:错
Only when I left my parents for Italy ______ how much I loved them.
A.I realized
B.I had realized
C.had I realized
D.did I realize
市场营销策划的特点是()。
A.目的性
B.战略性
C.先进性
D.动态性
E.操作性