Index
=>
Exercise 1.5.2.3: Look at the picture below and try to fill in the gaps without looking in the book.
The first letter of each word or short phrase is given
In fall "t
t
" and blue flagging tapes are not clearly visible from a distance of 30 meters.
During the dark times r
t
should be used in order to be visible.
An effective G
may be used for accurate marking of a
r
.
Check
Hint
OK
Index
=>