Test # 27
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760 questions in 76 tests. Each test contains 10 questions.
Idiom of the Day
the exact time when an attack or other military action will start
The air force planes waited until zero hour in order to begin their bombing mission.
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Precautions while using Electrical Equipment
Precautions while using Securing Email
Reduce excessive heating or cooling
Space heating in winter is a big power guzzler, and the same for summer cooling for those homes with cooling systems. Use localised equipment rather than central air conditioning or heating systems, and only heat or cool occupied rooms. The room temperature should not be more than 10 degrees (Celsius) more or less than the outside/ ambient temperature. Fan or oil heaters with thermostats are best, and avoid under floor heating. In summer use a fan rather than air conditioning. But rather than use equipment at all, the best no cost saving options are things like wearing warmer clothing and using blankets in winter or opening the windows in summer.