Examkin

Soru

Zorluk: OrtaExplicit Main Idea

Aviation fuel storage systems are highly vulnerable to biological degradation when microscopic fungi thrive in stagnant water pockets at tank bottoms. These microorganisms consume hydrocarbons, multiplying rapidly and generating corrosive acidic byproducts. Over time, thick fungal mats can clog fuel filters, corrode internal aluminum lines, and cause erratic fuel gauge readings. Consequently, routinely draining accumulated water from tank sumps is the most effective operational method for preventing microbial contamination in aviation fuel systems.

According to the passage, which of the following expresses the main idea?

  1. A
    Microscopic fungi produce corrosive acidic byproducts while consuming hydrocarbons in fuel tanks.
  2. B
    Thick fungal mats clog engine filters and cause erratic fuel gauge readings in aircraft.
  3. Routinely draining water from tank sumps is the most effective method to prevent microbial fuel contamination.Cevap
  4. D
    Aviation fuel storage tanks must be replaced whenever water enters internal fuel lines.

Cevap

Routinely draining water from tank sumps is the most effective method to prevent microbial fuel contamination.
The passage builds up by explaining how microbial growth occurs in stagnant water and the damage it causes, culminating in the explicit topic sentence in the final line: 'Consequently, routinely draining accumulated water from tank sumps is the most effective operational method for preventing microbial contamination in aviation fuel systems.' The correct option directly reflects this explicit claim.

Adım Adım Çözüm

1
Read the passage to identify the central topic and scope.
The text discusses how water causes fungal growth in aviation fuel tanks and concludes with the primary preventive measure.
Understanding the full context helps separate background facts from the core takeaway.
2
Locate the explicit topic sentence that unifies the paragraph.
The concluding sentence explicitly states: 'Consequently, routinely draining accumulated water from tank sumps is the most effective operational method for preventing microbial contamination in aviation fuel systems.'
Expository technical paragraphs often place the explicit main idea in the final sentence as a synthesis or conclusion.
3
Match the explicit statement to the corresponding answer choice.
The option stating that routinely draining water from tank sumps is the most effective method directly paraphrases the explicit topic sentence.
The correct response must capture the main idea rather than isolated supporting details or unstated exaggerations.

Anahtar Kavram

Explicit Main Idea Identification
Tahmini Süre:1m 0s
Bu soruyu puanla

Konular

Explicit Main Idea

Bu konudan daha fazla soru