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返回课程 ASD-STE100（简化技术英语）规则部分Rule 4.3 Use a vertical list for complex text. 规则4.3对于复杂的文本使用垂直列表。

When you must include many different items or actions in a sentence, you can put them in a vertical list. Vertical lists make long complex sentences much easier to read and understand.


When you make a vertical list:
- Put a colon (:) at the end of the main part of the sentence, before the first item in the vertical list.
- Identify each item in the vertical list with a number, letter, punctuation mark or symbol. For example, you can use:
· A dash (-)
· A letter (b)
· A number (7)

· A bullet point (·)


To know which marks or symbols to use, refer to the applicable specifications for technical publications, style guides, and other official directives.
- Start each item in the vertical list with an uppercase letter.
- Put a full stop (period) at the end of an item in the vertical list if it is a full sentence.
- Do not put a full stop or a comma at the end of an item in the vertical list if it is not a full sentence.

- Put a full stop at the end of the last item in the vertical list.


Examples:
Non-STE: The wheel assembly comprises the tire, the tube, the spoke, the spoke fittings, the valve, and the hub.
STE: The wheel assembly has these parts:
- The tire
- The tube
- The spokes
- The spoke fittings
- The valve

- The hub.


Non-STE: If the RAT is retracted, remove the tag, open the isolating valves and, ensuring that there is no possibility of fouling, slowly extend the RAT to its full stroke. Close the isolating valves; tag “DO NOT OPERATE.” Release the DOWN pressure.

STE: If the Ram Air Turbine (RAT) is retracted:
(a) Remove the tag.
(b) Open the isolating valves.
(c) Slowly and fully extend the RAT and make sure that it does not touch other parts.

(d) Close the isolating valves.

(e) Tag the isolating valves with “DO NOT OPERATE.”
(f) Release the DOWN pressure.


Non-STE: During the final movement of the landing gear retraction, the door operating bar located on the leg contacts and turns the latch, withdrawing the roller from the slot and the second roller entraps the door operating bar.


STE: When the landing gear retracts:
(1) The door operating bar on the leg touches and turns the latch.
(2) This causes the roller to move out of the slot.
(3) The second roller holds the door-operating bar.


Non-STE: The report must include each of the following: a completed REC-1 form, a threeview drawing of the unit, a photograph of the unit, a copy of the source data.


STE: The report must include:
· A completed REC-1 form
· A three-view drawing of the unit
· A photograph of the unit
· A copy of the source data.

When you use a vertical list, especially in a safety instruction (for example, a warning or caution), make sure that you do not hide negative information. If necessary, repeat a negative command in the vertical list item.

Example:

Non-STE: CAUTION: WHEN YOU GET ACCESS TO THE REAR FUSELAGE THROUGH THE ACCESS PANEL, DO NOT:
- PUT YOUR FEET ON THE APU LINE.
- USE THE APU LINE AS A HANDLE.

STE: CAUTION: WHEN YOU GET ACCESS TO THE REAR FUSELAGE THROUGH THE ACCESS PANEL:

- DO NOT PUT YOUR FEET ON THE APU LINE.
- DO NOT USE THE APU LINE AS A HANDLE.


Always make sure that each item in the vertical list connects clearly and correctly to the first part of the vertical list (before the colon).


Examples:


Non-STE: Do not use acetone for cleaning these parts after the repair:
- the service cabinet,
- the toilet shrouds with the supports
- parts made of polycarbonate.

STE: After the repair, do not use acetone to clean:

STE:
- The service cabinet
- The toilet shrouds
- The toilet shroud supports
- Parts made of polycarbonate.

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