What may affect the accuracy of sounding with echo sounder?

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 may affect the accuracy of sounding with echo sounder?
A.Sea bottom
B.Ship's speed
C.Speed of current
D.Water temperature and density

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