测量液位只是为了管理液体的储藏量。
参考答案：错
When the students heard the news, all of them were in _____.
A．higher spirit
B．high spirits
C．a high spirit
D．a higher spirits
某轮真航向120°，船速15kn，流向060°，流速3kn。则该轮航迹向为（）。
A．129°
B．111°
C．130°
D．120°
