A displaced threshold is marked by _______ .
A.the yellow arrows leading up to a solid white line
B.the yellow chevrons leading up to a solid white line
C.the yellow diagonal stripes
D.a dashed white line
正确答案是A
A displaced threshold is marked by _______ .
A.the yellow arrows leading up to a solid white line
B.the yellow chevrons leading up to a solid white line
C.the yellow diagonal stripes
D.a dashed white line
正确答案是A