What is the main purpose of DGPS?

题库:船长 类型:最佳选择题 时间:2019-02-14 17:22:46 免费下载:《甲类船长英语考证》Word试卷

What is the main purpose of DGPS?
A.Improve positioning accuracy
B.Decrease positioning accuracy
C.Reduce operational cost
D.I don't know

本题关键词:白兰氏虫草菌丝体鸡精(BRAND′S ESSENCE OF CHICKEN WITH COEDYCEPS);