进口许可证管理的原则是“一证一关”和“一批一证”。
A. 正确
B. 错误
What does the woman mention might be the cause of their problem?
A. The cost.
B. The personnel.
C. The product.
D. Their reputation.
W.R. Grace is a typical long-lived company that has run the following business except ______.
A. sugar and tin
B. natural fertilizer
C. chemical products
D. air planes
项目都具有一定的约束条件,通常被称为项目的“三大目标”。不是三大目标的内容为()。
A. 限定的投资
B. 限定的地点
C. 限定的时间
D. 限定的质量