题目内容
传导传热是分子受热后加速运动，分子之间相互撞击加剧，在碰撞过程中能量较高的分子把部分能量传给能量较低的分子，直至达到能量平衡为止。
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为提高低负荷时的计量准确性： 应选用过载( )的电能表。
Human beings are animals. We breathe, eat and digest, and reproduce the same life (21) common to all animals. In a biological laboratory rats, monkeys, and humans seem very much the same. However, biological understanding is not enough: (22) itself, it can never tell us what human beings are. (23) to our physical equipment the naked human body--we are not an (24) animal. We are tropical creatures, (25) hairless and sensitive to cold. We are not fast and have neither claws nor sharp teeth to defend ourselves. We need a lot of food but have almost no physical equipment to help us get it. In the purely physical (26) , our species seems a poor (27) for survival. But we have survived--survived and multiplied and (28) the earth. Some day we will have a (29) living on the moon, a place with neither air nor water and with temperatures that turn gases into solids. How can we have done all these things Part of the answer is physical. (30) its limitations, our physical equipment has some important (31) . We have excellent vision and hands that can (30) objects with a precision unmatched by any other (33) . Most importantly, we have a large brain with an almost (34) number of neural (35) .
i The need for resourcesii Providing health information for citizensiii A new area that aroused the academic interestiv Building cities in earthquake zonesv The first campaigns for environmental changesvi The great effect of environment on city planningvii The impact of global warming on citiesviii Laws bring temporary promotionix Removal of the unwanted by-productsx The increasing speed of suburban development Paragraph D（）
焙烤上色一般需对原料进行初步处理，以增加呈色反应所必须的基础物质，如在鸡、鸭的表面均匀地涂上一层饴糖，使原料表面在高温下发生焦糖化反应。
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