Fire Services Written Aptitude Test (Station Officer) - Hong Kong key terms

The rule that a verb must match its subject in number and person, so a singular subject takes a singular verb. Errors often appear when phrases separate the two or with collective nouns.

A word naming a group of people or things, such as team, staff or committee. In British usage it usually takes a singular verb unless members are acting individually.

A descriptive phrase placed so that it appears to modify the wrong word, usually because the intended subject is missing from the main clause. It makes the sentence illogical or ambiguous.

Balancing items in a list or comparison by using the same grammatical form, such as all nouns or all infinitives. It keeps official writing clear and easy to scan.

The level of formality in language suited to an audience and purpose, ranging from casual speech to formal report writing. Official reports call for a neutral, impersonal register.

A construction where the object of an action becomes the grammatical subject, often hiding who acted. It suits impersonal incident reports but weakens accountability when overused.

A conclusion drawn from evidence in a passage rather than stated directly. Reading questions often test whether a candidate can identify what is strongly implied but never written.

The central point a passage conveys, to which most sentences contribute. It differs from a supporting detail, which merely illustrates or evidences that point.

漢語中沿用已久、結構固定的四字或短語，含比喻或典故義。公務寫作中濫用會顯得浮誇，但理解其義對閱讀理解和用詞準確題很關鍵。

用於公文、報告、新聞的正式書寫語體，語法較口語嚴謹，虛詞與句式講究。消防處報告、通告均要求使用規範書面語而非粵語口語。

因字形相近、讀音相同或記憶錯誤而寫錯或誤用的字。中文語文題常要求辨正錯別字，例如「部署」誤作「佈署」。

輔助表達語氣、停頓與結構的符號，如逗號、句號、頓號、引號。中文頓號用於並列詞語，與英文逗號用法不同，屬常考細節。

政府公文的標準結構，包括標題、受文者、正文、署名與日期等要素，以及上行、下行、平行文的分類。格式錯誤會影響文件效力與觀感。

A comparison of two or more quantities by division, expressed as a:b. Ratios allow scaling of mixtures, staffing levels or equipment allocation while preserving proportions.

An equation stating that two ratios are equal, used to solve for an unknown quantity. Setting up the proportion correctly is usually the decisive step in word problems.

The increase or decrease of a value expressed as a percentage of its original amount, calculated as change divided by original times one hundred. The base matters more than the absolute change.

A mean in which each value contributes in proportion to its assigned weight rather than equally. It is used when combining groups of different sizes, such as response times across districts.

A technique that first finds the value of one unit and then multiplies to find the value of many, or vice versa. It converts rate problems into simple multiplication or division.

The speed at which a task is completed, often expressed as a fraction of the job per unit time. Combining rates by addition lets you find how long joint effort takes.

A property of an argument whose conclusion must be true whenever its premises are true, purely because of logical form. Validity concerns structure, not the actual truth of premises.

A deductive argument with two premises and a conclusion, each relating categories, as in all A are B and all B are C, therefore all A are C. Common errors arise from reversing relations.

The logically equivalent form of a conditional statement obtained by negating and swapping both parts, so if P then Q becomes if not Q then not P. The converse is not equivalent.

A necessary condition must hold for an outcome; a sufficient condition guarantees it. Confusing the two is a frequent flaw in reasoning questions and in operational risk analysis.

Correlation means two variables move together; causation means one produces the other. Assuming causation from correlation alone is a classic reasoning error in data-based arguments.

The turning effect of a force, calculated as force multiplied by perpendicular distance from the pivot. It explains leverage in tools, door opening and rescue equipment.

The tendency of a force to rotate a body about a point, equal to force times perpendicular distance. Balancing moments about a support determines stability of ladders and loads.

The ratio of load moved to effort applied by a machine. A value above one means the machine multiplies force, as pulleys and levers commonly do in rescue work.

The point through which the total weight of a body acts. An object topples when a vertical line from this point falls outside its base of support.

The resistance to relative motion between surfaces in contact, depending on the materials and the normal force. It aids braking and grip but hampers sliding heavy loads.

Pressure is force per unit area; flow is volume moved per unit time. In hose lines, nozzle pressure and friction loss determine the reach and volume of the water stream.

The sudden transition of a compartment fire to full involvement, when heat radiated to furnishings ignites them almost simultaneously. Recognising warning signs is a core fireground judgement.

A violent deflagration caused when air enters an oxygen-starved compartment containing hot, fuel-rich gases and unburnt products. Opening the compartment carelessly can trigger it.

A structured evaluation of hazards, likelihood and severity to decide control measures before committing crews. It is dynamic on the fireground and formal in inspection and planning work.

The system by which one officer assumes overall responsibility at an incident, sets objectives and assigns sectors. Clear command prevents freelancing and keeps safety accountability traceable.

The process of raising an incident to a higher response level or referring a decision upward when it exceeds local authority or resources. Timely escalation is judged positively in situational tests.

Hong Kong subsidiary legislation under the Buildings Ordinance setting requirements for means of escape, fire resisting construction and access for firefighting. Compliance shapes building design and inspection.

Hong Kong legislation requiring improvements to fire safety in specified old composite and domestic buildings, covering escape routes and fire service installations. It underpins enforcement and advisory work.

The continuous protected route from any point in a building to a place of safety, including exits, staircases and signage. Blocking it is a common fire safety offence.

The Hong Kong government department responsible for firefighting, rescue, and providing emergency ambulance services, organised into operational commands and specialist units. It also handles fire safety enforcement and public education.