3、Access doors and panels in a zone are identified by the zone number and a two or three letter suffix. 区域内的门禁门和面板由区域号和两个或三个字母的后缀来标识

Access doors and panels within the area are recognized by the number of the area and two or three letter suffix.

The area number and a postfix with two or three letters identifies the access doors and panels in an area.

The identification of the access panels and doors is accomplished by the zone number suffix.

正确答案：B

1477、If either of these devices is installed explain whether it is required equipment.

1476、If an engine fire detection system is available. describe, give principle of operation, and explain how to use it.

1475、If a supply shutoff valve was closed for less than five minutes no maintenance is required and shutoff periods are notaccumulative.

1474、If a company publication style manual is used, the format and layout should follow this Specification to the extentpracticable

1473、Identify the wires with sleeves of different colors.

1472、Identify sections that can cause specific types of trouble

1471、However, the systems are independent and there is no fluid, exchange between them.

1470、Hold the cylinder tightly.

1469、Head aircraft into the wind.

1468 、Handbooks shall be readily revisable. They may be thin loose-leaf from, with durable, multi-ring cover, or permanentlybound.