自动编号数据类型一旦被指定，就会永久地与下列哪一项进行连接( )。A．字段 B．记

某项目现有三个互斥的投资方案A、B、C，欲从中选择最有利的方案。已知各方案的寿命期都是一年，一年后的净残值为零。假设基准收益率为6%。

根据题意，回答下列问题：

A方案的净现值为()万元。

A.16.98

B.23

C.39.9

D.18.97

金属材料在高温时抵抗氧化性气体腐蚀作用的能力称为耐腐蚀性。

现代德国中学的主要类型有普通中学、实科中学、（）和文理中学。

带电的多余电缆可以盘放起来。（）

Questions

·Look at the questions for this part.
·You will hear a passage about job. You will listen to it twice.
·For questions , indicate which of the alternatives A, B, or C is the most appropriate response.

It is implied in the passage that ______.

A. the Maces believe a good career is even more important than their family life
B. Rodney’s children are quire happy with their position in the family
C. even capable women sometimes need encouragement from their families