若工件以内圆孔表面用定位销定位，那么最多能被消除（）自由度。A.一个 B.二个 C.

Lucy was one of my best friend at high school. At that time, we often spend time together. Thank to her help, I made great progresses in my study. Last year, she decided to study abroad. In other words, we would be separated for long time. Before she was left, I prepared a gift to show my best wishes to him. She said it was a best gift she has ever had. From then on, we’ve kept in touch with each other through e-mail. I look forward to see her again in the near future.

以下情况属于走私行为的情况有（）.

A.擅自将出口加工区内的海关监管货物、物品，运出区外的；

B.以藏匿方式逃避海关监管，携带国家禁止进出境物品进出境的；

C.进出口国家限制进出口的货物，进出口货物的收发货人向海关申报时不能提交许可证件的

D.未经海关许可，在海关监管区以外存放海关监管货物的

创建和谐社会，保护生存环境是每一个公民的责任和义务。下列做法不符合人与自然和谐相处的是

A．对废旧电池进行回收处理

B．对聚乙烯等塑料垃圾进行深埋或倾倒入海

C．使用沼气、太阳能、风能等能源替代传统的煤炭

D．采用可降解塑料制一次性饭盒

四时八节中的八节指什么？

构件库管理的主要手段是添加、拷贝、修改和（）。

A、记忆

B、提交

C、整合

D、存取