The spacing between the highway lamps is __________
A. 10 to 15m
B. 15 to 30m
C. 30 to 45m
D. 30 to 60m
Answer:D
The spacing between the highway lamps is __________
A. 10 to 15m B. 15 to 30m C. 30 to 45m D. 30 to 60m