Under pressure from animal welfare groups, two national science teachers associations have adopted guidelines that ban classroom experiments harming animals. The National Association of Biology Teachers and the National Science Teachers Association hope to end animal abuse in elementary and secondary schools and, in turn, discourage students from mishandling animals in home experiments and science fair projects.
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Only children under five are excepted from this survey.()
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The () is a crystal which, under pressure, produces an electric current which varies with the pressure.
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Under normal conditions a liferaft is released from itscradle by().
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In a compression refrigeration plant the refrigerant is under low pressure in the () and under high pressure in the ().
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Under normal operating conditions, the highest temperature and pressure conditions existing in a flash-type evaporator will occur in the ().
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The oil pressure and flow from each bearings can be checked when()
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High pressure ridge()from Sevastopol to eastern Libya.
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Cast irons weakness in tension and under shock loading limits its use to low pressure steam, air, oil and low speed water fittingsThe above sentence, most probably means ().
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To determine the pressure and temperature limitations under which LFG is required to be transported on a barge,you should look at the().
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The diffuser prevents pressure pulses from one cylinder () another during operation.
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With supercharging a larger mass of air is supplied to the cylinder by blowing it in under pressure, which is the best means to () of the engine.
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High cylinder firing pressure, accompanied by low exhaust temperature, can result from ()
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They worked hard together, (competitive) and under pressure.
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____ men have learned much from the behavior of animals is hardly new.
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A ______ is a small animal or plant that lives on or inside a larger animal or plant, and gets its food from it.
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Which word that formerly meant animal, and later animal from Latin and beast from French found their way into English?
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I understand ______ preparation that the staff must put in under pressure to meet the deadline.
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The metal powder is compacted by placing in a closed()cavity under pressure in powder
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Text15) What is the principle when decisions have to be made under pressure?
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We can infer from the text that humans and animals______.
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Men are under greater pressure than women in that they______.
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在最优末段长度的条件下,末段终点的最高压力等于起点的最低压力。It can be seen that: under the condition of the optimal terminal length, the maximum pressure at the terminal point is equal to the minimum pressure at the starting point.
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Many pet cats are in danger from ____ from other animals
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Men differ from animals_____three is to one.
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