Do you think he is _____size ___Tom? [ ]
A. the same; as
B. same; as
C. same; like
答案:A
— Could you take care of my dog while we are away?
—_______.
A.Never mind
B.That’s all right
C.With pleasure
D.It’s my pleasure
数据库管理员要随时观察数据库的动态变化,并在数据库出现错误、故障或产生不适应的情况时能够随时采取有效措施保护数据库。这种监控机制称为______。