To prevent the spread of fire by convection you should ().
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The purpose of the deck seal in an inert gas system is to prevent().
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In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by ().
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Fire dampers prevent the spread of fire by().
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Which of the following is the most effective technique to prevent source IPAddress spoofing?()
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The spread of fire is prevented by().
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To prevent the spread of fire by conduction, you should ().
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The ability of the governor to prevent fluctuations in engine speed is termed ().
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Which of the following must be eliminated to prevent accidents?()
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The spread of fire is NOT prevented by().
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The air reservoirs must have () fitted to prevent rupture in the event of fire.
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In order to benefit from the use of storm oil in heavy seas,the storm oil should be spread ().
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The pollution prevention regulations do not apply to the transfer or discharge of ()
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When did Mongolian doctors begin to spread the knowledge of Mongolian medicine?
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In addition to getting them vaccinated ( 接种疫苗 ) against both seasonal and H1N1 flu, teach your kids basic hygiene habits, which can _______ in preventing the spread of the virus.
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Every possible means _______ to prevent the spread of disease.
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From the author's point of view, the best way to prevent oil spills is to get rid of oil completely.
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To prevent viruses from spreading, we should______.
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What are the steps taken by'the Department of Health of UK with the risk of the virus spreading to human population?