×
单选题
Access doors and panels in a zone are identified by the zone number and a two or three letter suffix.
A
Access doors and panels within the area are recognized by the number of the area and two or three letter prefix.
B
The area number and a postfix with two or three letters identifies the access doors and panels in an area.
C
The identification of the access panels and doors is accomplished by the zone number suffix.
答案解析
正确答案：B
