户籍证明工作主要是居民身份证及其他人口证件的签发和验证工作。 ( )
参考答案:对
—Catherine, I have cleaned the room for you.
—Thanks. You _________it. I could manage it myself.
A.needn’t do
B.needn’t have done
C.mustn’t do
D.shouldn’t have done
业务流程重组的缩写是()。
A.BOM
B.BPR
C.CRM
D.JIT