A.20cm,20cm,20cm
B.20cm,5cm,50cm
C.5cm,20cm,20cm
D.50cm 50cm 50cm
A.标识清晰,要求应距地面20CM,距墙壁5CM,距天花板50CM
B.标识清晰,要求应距地面25CM,距墙壁5CM,距天花板5
C.标识清晰,要求应距地面20CM,距墙壁5CM,距天花板55CM
D.标识清晰,要求应距地面20CM,距墙壁10CM,距天花板50CM
A.≧20cm ≧5cm ≧50cm
B.≧10cm ≧5cm ≧50cm
C.≧20cm ≧10cm ≧50cm
D.≧20cm ≧5cm ≧60cm
A.20cm,20cm,20cm
B.20cm,5cm,50cm
C.5cm,20cm,20cm
D.50cm,50cm,50cm
E.100cm,50cm,50cm
A.20cm,20cm,20cm
B.20cm,5cm,50cm
C.5cm,20cm,20cm
D.50cm,50cm,50cm
A.≥30cm、≥50cm、≥10cm
B.≥20cm、≥50cm、≥5cm
C.≥10cm、≥20cm、≥20cm