形状公差有哪几个项目？
参考答案：
形状公差有6个项目，即：直线度、平面度、圆度、圆柱度、线轮廓度及面轮廓度。
—What do you want to be?
—I want to be ______. I like talking to people and writing. [ ]
A. a reporter
B. a waiter
C. an actor
D. a bank clerk
通过（）可完成车辆路线模型、最短路径模型、网络物流模型等功能。
A．GPS
B．GIS
C．EDI
D．PDA
