2009年元旦期间，小雨所在的城市连续几天都有大雾，给人们的出行带来诸多不便，关于雾的形成，下列说法正确的是（）A．地面上的水蒸发形成的白色气体B．空气中的水蒸气遇冷液化成-物理

更多内容推荐

• 小明在家过周末，联想到一些学过的物理知识的场景所包含的物理道理，下列说法错误的是[]A．擦地后，开窗通风干的快，是加快空气流通，使蒸发加快B．从冰箱中取出的汽水瓶流汗，-八年级物理
• 下列现象需要放热的物态变化是（）A．衣柜里的樟脑丸变小了B．冰雪消融C．夏天洒在地板上的水很快干了D．秋天雾的形成-物理
• 阅读理解。 Making an advertisement for television often costs more than a movie. For example, a two-hour
• 阅读理解。 Recently, another study has been carried out about who is the greatest American president. Six
• 阅读理解。 As societies develop, their members start to see things not so much according to what they nee
• 海产品进冷库时比出冷库时轻，这是为什么？-物理
• 阅读理解。 Without proper planning, tourism can cause problems. For example, too many tourists can crowd
• 当水被烧开时，能看见水面上冒出“白气”，这白气是（）A．喷出的高温水B．水蒸气C．水蒸气和空气的混合物D．水蒸气凝结的小水珠-物理
• 阅读理解。 You're in a department store and you see a couple of attractive young women looking at a
• 阅读理解。Table 1: Major Agricultural Products ProductsOutput (产量) 1997(1 million tons) Increase overGrai
• 阅读理解。 The man who brings my milk used to knock for his money for the week's milk while I was ea
• 阅读理解。 Although the Queen of the UK is no longer responsible for governing the country, she carries o
• 阅读理解。 What is Bay? The simple answer is that it is a global trading platform where nearly anyone can
• 下列自然现象中各属于哪种物态变化雾：______，露：______，霜：______．-物理
• 小明在厨房帮妈妈做饭时观察到了一些现象，并利用所学的科学知识进行的解释，其中不正确的是（）A．能闻到饭菜的香味是分子扩散的结果B．用煤气炉炒菜是利用内能来加热物体C．煮饭-物理
• 干冰（固态CO2）的制取是将气态的CO2加压低温处理变成固态CO2，该过程的物态变化是______；干冰暴露在常温下时，它会直接由固态变为气态，用干冰在舞台上产生的淡淡白雾，是由-物理
• 开启啤酒瓶盖瞬间，会听到“嘭”的一声，同时瓶口有一股“白烟”，下列说法不正确的是（）A．瓶内压强比瓶外大，气体膨胀时发出响声B．瓶内气体对外做功，内能减小C．瓶口“白烟”是瓶内-物理
• 完形填空。 Gold Mine in ScotlandIf you were interested1a gold miner, you would probably not think2to Scot
• 早晨，我们常看到花草上有露水，这一物态变化是：[]A．凝固B．液化C．凝华D．熔化-九年级物理
• 阅读理解。 China loves exhibitions. Exhibitions provide people with a chance to see what is available, an
• 阅读理解。 There are millions of used cell phones in the world today, the most of them just lay in our ho
• 阅读理解。 This year I'm buying presents for 16 children, as well as my own daughter, Mia-Grace, who
• 阅读理解。 The United Nations says more than 900 million people worldwide do not have enough to eat. Offi
• 阅读理解。 "Pay has little to do with motivation in the workplace". That's the argument pu
• 阅读理解。 "Who made your T-shirt?" A Geo letown University student raised that question. Pietr
• 若不小心被①100℃沸水烫伤；②100℃水蒸气烫伤，______（填“①”或“②”）情况更严重，其道理是______．-物理
• Reading comprehension. Almost a decade ago, the federal government dropped $100 million for an Earth
• 下述事实属于哪种物态变化过程？（1）放在衣箱中的卫生球过一段时间就消失了，这是______现象；（2）夏天打开冰箱冷藏室的门，看到很多“白气”，这是______现象；（3）冬天，嘴里呼“-物理
• 冬天在户外说话时，常看见人们的口中呼出“白气”．这是由水蒸气______形成的，它实际上就是由大量的浮在空气中的______组成的．-物理
• 阅读理解。 Few laws are so effective that you can see results just days after they take effect. But in th
• 阅读理解。 Sony and Toyota are struggling. But one brand name is booming (繁荣) in Japan during the economi
• 初春的早晨会看到大量的露珠，露珠是由水蒸气________（填写物态变化名称）形成的，在这个过程中水蒸气会________（选填“吸收”或“放出”）热量。两滴小露珠接触后，会合成一滴大露-九年级物理
• 阅读理解。 People in China, as in other parts of the world, are waiting to see how U.S. President-elect B
• 阅读理解。 The biggest safety threat facing airlines today may not be a terrorist (恐布分子) with a gun, but
• 阅读理解。 Letters to the next presidentDear Mr. President:I would like to personally thank you for your
• 阅读理解。 In Western countries people have been using the installment plan since the first half of the t
• Directions: Read the following Passage. Complete the diagram by using the in formation from the pass
• 小强同学在家洗澡时，发现此过程涉及许多物理知识，于是他总结出以下几条，其中一条错误的是（）A．浴室内充满的“白气”是水蒸气B．浴室内玻璃变得模糊不清是水蒸气液化形成的C．热-物理
• 夏天，我们去小卖部买冰冻可乐，当售货员从冰箱里取出瓶装可乐时，很快会发现瓶的外壁“出汗”，这是因为（）A．可乐水会从瓶内慢慢渗出B．空气中的水蒸气遇冷液化C．瓶外壁的水不断-物理
• 阅读理解。 Do you ever wonder about the smartest way to spend your allowance (零用钱)? Twelve-year-old Fabia
• 阅读理解。 More than 17,000 flights to and from European airspace were cancelled, including all flights f
• 在标准大气压下，水沸腾时产生的水蒸气温度和水一样，都是100℃，水蒸气导致的烫伤通常比水烫伤更严重，这是因为当人的皮肤与100℃的水蒸气接触时，水蒸气首先要______为100℃的-物理
• 夏天在盛有冰镇饮料的玻璃杯外壁上，会产生许多小水珠．下列说法正确的是（）A．水是从杯中渗透出来的B．水是空气中的水蒸气遇冷液化产生的C．水是室内的空气遇冷液化产生的D．水的-物理
• 任务型阅读。请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。注意：每个空格只填一个单词。Disaster (灾难)strikes South-east AsiaThe t
• 阅读理解。A. defensive B. common C. fact D. fear E. consciousness F. values G. rush H. questioned I. unli
• ______和______是使气体液化的两种方法．液化石油气是利用______的方法实现的．-物理
• 关于雨、露、霜、雾的成因，下列说法中正确的是（）A．雨水是水的液化形成的B．露水是水的汽化形成的C．霜是水蒸气凝华形成的D．雾是水蒸气凝华形成的-物理
• 炎热的夏天，从冰箱里拿出冰棒，冰棒周围产生许多“白气”的过程中，发生的物态变化是（）A．熔化B．液化C．凝固D．凝华-物理
• 阅读理解。 From 1964 to 1978, Dazhai, with a population of 500, was the most famous village in China. Mil
• 阅读理解。 By 2010, spending on Internet advertising will account for 10% of total US ad dollars, accordi