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Difficulty: EasyDrawing Logical Conclusions

Based on the technician's log below, which action will the automated system perform next?

Answer:Automated greenhouse ventilation louvers are programmed to stay open only when interior humidity exceeds 85% or temperature rises above 90°F. When neither condition is met, the system automatically returns the louvers to their resting closed position. During a morning storm, sensors recorded an interior humidity of 92% and a temperature of 76°F. Once the storm passed, humidity dropped to 78% while the temperature remained at 76°F. Under these new readings, the automated louvers will 【close】.

Answer

close (or shut)
The passage specifies that the louvers remain open only when humidity exceeds 85% or temperature exceeds 90°F, and return to a closed position when neither condition is met. With the humidity dropping to 78% and temperature steady at 76°F, neither criterion is met, so the louvers must close.

Step-by-Step Solution

1
Identify the criteria required for the louvers to remain open.
Louvers stay open only if humidity > 85% or temperature > 90°F.
Establishing the operational rule determines how the mechanism responds to environmental inputs.
2
Evaluate the updated environmental readings against the criteria.
Humidity is 78% (≤ 85%) and temperature is 76°F (≤ 90°F); neither threshold is exceeded.
Comparing post-storm values verifies whether the activation conditions are currently active.
3
Apply the passage's stated default rule for when neither condition is met.
The system automatically returns the louvers to their resting closed position.
Since both triggers are inactive, the logical deduction is that the louvers will close.

Key Concept

Synthesizing explicit conditional rules with new environmental variables to deduce system behavior.
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Drawing Logical Conclusions

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