An anemometer on a moving vessel measures ______.
A.apparent wind speed only
B.true wind speed and true wind direction
C.true wind speed only
D.apparent wind speed and true wind direction
正确答案:A
在运动的船上的风速计仅测量视风(相对风)速
An anemometer on a moving vessel measures ______.
A.apparent wind speed only
B.true wind speed and true wind direction
C.true wind speed only
D.apparent wind speed and true wind direction
正确答案:A
在运动的船上的风速计仅测量视风(相对风)速