根据你对生活中物理量的认识，下列数据符合实际的是（）A．我国家庭电路的电压是220VB．物理实验室使用的“2.5V”小灯泡正常发光时的电阻约为500ΩC．手机正常通话时的电流约为5AD．-九年级物理

更多内容推荐

• 下列关于生活环境中的一些常见温度的说法中，你认为最符合实际的是A．人感觉到温暖而又舒适的房间温度是23℃B．火柴的火焰温度是37℃C．人的正常体温是47℃D．我国历史上的最低气温-八年级物理
• 使用温度计时，首先要观察它的量程和认清它的。小强在用温度计测量烧杯中液体温度时读取了四次数据，每次读数时温度计的位置如图所示，其中正确的是。图中所示的是用温度计分-八年级物理
• 在“用温度计测水的温度”实验中：（1）需要的器材除热水外，还需要________、___________。（2）有甲、乙、丙三支温度计，其测量范围分别是：甲0～100℃；乙-30～55℃；丙35～42
• 的叫做温度。常用的温度计是根据液体的的规律制成的。-八年级物理
• 如图所示，（1）用天平测量物体质量时，砝码与游码的读数如图甲所示，则物体的质量是_________g，如图乙所示，木块A的长度为________cm；如图丙所示，温度计的读数是_________-九年
• 图所示的是一支常用体温计。下列关于该体温计的说法中，正确的是（）A．它的示数是8℃B．它的分度值是1℃C．它不能离开被测物体读数D．它是根据液体热胀冷缩的规律制成的-八年级物理
• 以下温度中最接近25℃的是（）恩施州夏季最热的室外温度正常人的体温夏天，让人感觉舒适的房间温度在我州，无盖锅中的沸水的温度-九年级物理
• 一支刻度均匀的温度计放在冰水混合物中时，示数是2℃，放在一标准大气压下沸腾水中时温度为98℃，用它测量一杯水的温度为26℃，请你计算一下这杯水的实际温度是多少？-物理
• 有一支刻度均匀，但读数不准的温度计，在冰水混合物中的读数为4℃，在标准大气压下的沸水中读数为96℃，用此温度计测某杯液体的温度是22.4℃，则这杯液体的实际温度是多少度？-物理
• 用质量相同、温度均为0℃的水和冰来冷却物体效果较好的是冰是因为冰______，一支刻度均匀，读数不准的温度计，在测量一标准大气压下沸水温度时，示数是95℃，在测热水温度时，-物理
• （多选）自制温度计时，在一定范围内，应该（）A．把温度计的玻璃泡做得相对大一些B．把温度计的玻璃泡做得相对小一些C．把温度计的内径做得相对粗一些D．温度计的内径做得相对细一些-物理
• 液体温度计是根据液体______的性质制成的．冰水混合物的温度是______．-物理
• 如图所示是伽利略温度计．当气压不变，气温升高时，若不考虑液体的蒸发，则（）A．管内液面降低管外液面升高B．管内液面升高，管外液面降低C．管内外液面都升高D．管内外液面都降低-物理
• 在防范甲型H1N1流感疫情中，体温计发挥了重要作用．体温计是根据水银的_________性质制成的，一支用过而没有甩过的体温计，读数停留在37.8℃，被误用来测量病人的体温．若病人-九年级物理
• As darkness fell, hundreds of people in the Swiss village left their houses. They were looking 16at
• Cyberspace, the connections between computers in different places, considered as a real place where
• I will never forget what happened to me that day. That afternoon，I was sitting at my favorite table
• On the night of May 9, 2011, musician Gao Xiaosong ran his car into three other cars in Beijing.But
• 完形填空(共20小题, 每小题1分，满分20分)Soon Tommy's parents, who had recently separated (分居), would arrive for
• When a first-time father saw his newborn son, he immediately noticed the baby's ears obviously
• “Good morning!” said a woman as she walked up to an old man sitting on the ground. The man slowly lo
• My teenage son Karl became withdrawn after his father died. As a single parent, I tried to do my bes
• Plants are very important living things. Life could not go if there were no plants. This is because
• The personal computer has overtaken the family dog as man's best friend．according to a study．Re
• Some time ago I discovered that one of my chairs had a broken leg. I didn't think there would b
• A school teacher decided to let her class play a game. The teacher told each child in the class to b
• Signs can sometimes be seen at the entrance of a house, expressing that a tramp（流浪汉） has passed. Thi
• One evening I went out and left my 17-year-old son in charge of his 8-year-old brother and 4-year-ol
• When I was nine, my family and some friends took a trip. During the trip some members of the group f
• Harry is eighteen now. He studies in a middle school. His parents like him very much and hope he can
• I can’t count how many times people have complained, while shaking their heads in obvious disappoint
• One hot night last July, when our new baby wouldn’t or couldn’t sleep, I tried everything I could t
• The accident at Lake Sherwood was in our backyard. An SUV(运动型多用途车)had gone off the road，down a hill,
• Dear Annie,I feel betrayed by my friend Hannah. We have been best friends 31 primary school and spen
• This is a part from US President Barack Obama’s speech on May 14 at Bamard College in New York. … My
• Each spring brings a new wildflower blooming in the fields along the highway I travel daily to work.
• Little Robby, our neighbour’s nephew, carefully drew some water into a bowl and started for the door
• After forty-three years I have forgotten the name of the old lady, who was a 16on the newspaper rout
• When his book Little Princes began, Conor Grennan was planning a year-long trip around the globe, a
• We were flying to a meeting. I was in the middle 36.I found that the young woman sitting next to me
• There lived a king who liked art. One day an artist offered to paint the mostbeautiful picture in th
• We come by business naturally in our family. Each of the seven children in our family worked in our
• As a young girl, Margaret “Mattie” Knight never played with dolls, preferring to make toys for her b
• I really love my job because I enjoy working with small children and like the challenges and awards
• 阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。 As sixth graders, kids were separating into grou
• Short and shy, Ben Saunders was the last kid in his class picked for any sports team. "Football
• Would you believe that the first outstanding deaf teacher in America was a Frenchman? His name was L
• I had offered to watch my 3-year-old daughter, so that my wife could go out with a friend. I was get
• It all started at the beginning of this term. At first, Carmen wasn’t really sure what was happening
• A few months ago as I wandered through my parents’ house, the same house I grew up in, I had a sudd