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Difficulty: MediumParaphrased Fact Recognition

Read the passage below:

In modern diesel exhaust systems, the diesel particulate filter (DPF) traps unburned soot particles within a porous ceramic honeycomb matrix. Differential pressure sensors constantly monitor the exhaust pressure both before and after the filter. When trapped particulate matter restricts exhaust flow and causes the pressure drop across the filter to exceed a critical threshold, the engine control module initiates active regeneration. During this cycle, auxiliary fuel is injected into the exhaust stream to elevate the filter temperature above 600°C, converting the accumulated carbon soot into harmless ash and carbon dioxide.

Match each passage claim on the left with its accurate paraphrased equivalent on the right.

  • The diesel particulate filter traps unburned soot particles within a porous ceramic honeycomb matrix.Combustion residue is captured inside a permeable mineral structure.
  • Differential pressure sensors constantly monitor the exhaust pressure both before and after the filter.Dedicated gauges continuously track the pressure variance across the intake and outlet of the unit.
  • Auxiliary fuel is injected into the exhaust stream to elevate the filter temperature above 600°C.Supplementary fuel is introduced into the exhaust line to induce intense thermal elevation.
  • Converting the accumulated carbon soot into harmless ash and carbon dioxide.Transforming collected particulate buildup into benign gaseous and mineral byproducts.

Answer

The correct pairings match each specific passage detail to its precise conceptual restatement: the ceramic trapping mechanism pairs with capturing residue in a permeable mineral structure; differential pressure sensing pairs with tracking variance across intake and outlet; auxiliary fuel injection pairs with introducing supplementary fuel to cause thermal elevation; and soot conversion pairs with transforming buildup into benign byproducts.
Each statement from the passage has an exact semantic counterpart on the right that expresses the same factual detail through synonym substitution and syntactic restructuring without changing scope or meaning.

Step-by-Step Solution

1
Isolate the factual statements in the left column and identify their core technical meaning.
Identified four discrete facts: filter structure and soot capture, differential sensor monitoring, fuel injection heating mechanism, and chemical conversion of particulate matter.
Deconstructing passage claims into fundamental components prevents confusion from surface-level wording differences.
2
Map technical terminology to valid synonyms and restructured syntax in the right column.
Mapped 'porous ceramic honeycomb' to 'permeable mineral structure', 'differential pressure... before and after' to 'pressure variance across intake and outlet', 'auxiliary fuel... elevate temperature' to 'supplementary fuel... thermal elevation', and 'harmless ash and carbon dioxide' to 'benign gaseous and mineral byproducts'.
Paraphrased fact recognition requires confirming that the meaning is preserved without relying on verbatim word matches.
3
Confirm that all matched pairs have direct textual support and no mismatched causal or quantitative elements.
Each pair establishes an unambiguous one-to-one correspondence strictly supported by the text.
Ensures distractors with reversed causes or distorted quantities are systematically eliminated.

Key Concept

Paraphrased Fact Recognition requires identifying restatements of specific passage facts that use alternate vocabulary and syntax while maintaining exact semantic equivalence.
Estimated Time:1m 0s
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Paraphrased Fact Recognition

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