船舶的航向有( )。
A．罗经航向
B．真航向
C．航迹向
D．陀螺航向
参考答案：A,B,C
----How did you _________ your vacation?
-----It’s ___________. Everything was really interesting.
A．like, boring
B．think of, boring
C．like, wonderful
D．think of, wonderful
机车车辆限界规定货物装载最大高度不得超过（）。
A.4700mm
B.4800mm
C.4900mm
D.5000mm
