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警察人員考試四等考試-消防警察人員類別中華民國憲法與消防警察專業英文11349單選題
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There is no denying that advanced firefighting involves not just the direct suppression of a fire but also the general knowledge of the theoretical framework of the process. The latter includes understanding the principles and methodologies behind the management and suppression of fires. To stop a conflagration, one needs to be aware of the concept of the combustion triangle, which presupposes that a conflagration needs three distinct components. Specifically, the latter would be a source of heat, oxygen, and a physical piece of burning material. As soon as the practitioner understands these premises, he or she may use various ways to convert them into methods of further fire suppression. One should note that the behavior of fires is dynamic and includes the ignition, propagation, and combustion phases. Therefore, a firefighter has to learn how to approach each activity since fires may be continuous or smoldering, as well as vary in heat content or speed. Additionally, it is also crucial to understand that the conflagrations may belong to different kinds and have unique properties, based on their sources. They can begin from electrical wires, kitchen frying pans filled with hot oil, or even various chemical substances. Consequently, concerning the verbal categorization of firefighting tactics, firefighters may oscillate between either offensive or defensive measures. The former includes the methods that allow suppressing the flames and materials directly and quickly. At the same time, defensive tactics are performed to put a perimeter around the fire and stop its spread to other objects in the area. Finally, it is also important to mention that ventilatory tactics are critical to adjust the inflow-outflow balance of gases in a building to avoid backdrafts.

Why are ventilatory tactics critical in firefighting?

AThey provide entertainment for onlookers.
BThey facilitate the introduction of more oxygen to strengthen the fire.
CThey adjust the inflow and outflow of gases to prevent backdrafts.正確答案
DThey allow firefighters to take more breaks.
答案與詳解
C
正確答案
通風戰術的關鍵作用是調節建築物內氣體的進出平衡,以避免逆燃(backdraft)發生。

為什麼答案是 C

直接對應短文原句:「ventilatory tactics are critical to adjust the inflow-outflow balance of gases in a building to avoid backdrafts」,完全吻合。

考點:無關選項排除考點:概念顛倒陷阱考點:通風戰術功能
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