Read the following technical passage:
During daily pre-flight servicing of tactical transport aircraft, fuel system specialists must perform a visual fuel contamination check. When draining fuel samples from the lowest sump drain valve, technicians must collect at least one quart of fuel into a clean, clear glass jar and inspect it for particulate matter and free water. If microscopic water droplets create a cloudy haze, the sample fails the clarity test, and personnel must let the tank settle undisturbed for 30 minutes before repeating the sampling procedure.
Fill in the blank to complete the statement according to the facts directly stated in the passage.
Cevap:If a fuel sample fails the clarity test due to a cloudy haze, personnel must let the tank settle undisturbed for 【30 minutes】 before repeating the sampling procedure.
Cevap
30 minutes (or thirty minutes)
The author explicitly states that when microscopic water droplets create a cloudy haze that fails the clarity test, 'personnel must let the tank settle undisturbed for 30 minutes before repeating the sampling procedure.' Thus, 30 minutes is the directly stated timeframe required to fill the blank.
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Anahtar Kavram
Direct retrieval of explicit quantitative details from a technical passage
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