问题
单项选择题
A Doppler log in the bottom return mode indicates the（）.
A.velocity of the current
B.bottom characteristics
C.depth of the water
D.speed over the ground
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
A Doppler log in the bottom return mode indicates the（）.
A.velocity of the current
B.bottom characteristics
C.depth of the water
D.speed over the ground
参考答案：D