Regarding the use of GPS, which one of the followings is incorrect?

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

Regarding the use of GPS, which one of the followings is incorrect?
A.GPS is the most accurate globalsystem today.
B.Its use is still under the USDepartment of Defence's control
C.DGPS is more accurate than GPS
D.GPS can provide a real-time positionunder any condition

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