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【简答题】
IKEA IKEA's story begins when Ingvar Kamprad was born in 1926 in Smaland in southern Sweden. He lived on a farm called Elmtaryd near the small village of Agunnaryd. As long as he could remember, Ingvar knew he wanted to develop a business. At the age of five he started selling matches to his neighbours and by the time he was seven, he was selling to people living further away, using his bicycle. He found that he could buy matches in bulk cheaply in Stockholm and sell them in small amounts at a very low price but still make a good profit. When he was ten he went on to selling other things like fish, pencils and pens. When he was seventeen, Ingvar's father gave him a present for doing well in school. What did he spend it on? He founded IKEA. The name IKEA was formed from the first letters of Ingvar Kamprad's name (I.K.) plus the first letters of Elmtaryd and Agunnaryd, the farm and village where he grew up. He increased his range of products from matches to include watches, jewellery and stockings(长袜). His business became so successful that he could not deliver to his customers personally. So he changed his business into a mail order operation.
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参考答案:
举一反三
【单选题】如图所示,小物块甲从竖直固定的1/4光滑圆弧轨道顶端由静止滑下,轨道半径为尺,圆弧底端切线水平。小物块乙从高为R的光滑斜面顶端由静止滑下。 下列判断错误的是:
A.
两物块到达底端时速度相同
B.
两物块运动到底端的过程中重力做功相同
C.
两物块到达底端时动能相同
D.
两物块到达底端时,乙重力做功的瞬时功率大于甲重力做功的瞬时功率
【单选题】如图所示,轨道ABC光滑,弹簧固定在水平轨道末端,小球从A处由静止滚下,撞击弹簧后又将沿水平轨道返回,接着滚上斜面.在这整个过程中,机械能转化的情况是(  )
A.
重力势能→动能→重力势能
B.
动能→弹性势能→动能
C.
动能→势能→动能→势能→动能
D.
重力势能→动能→弹性势能→动能→重力势能
【简答题】如图所示,轨道ABC光滑,弹簧固定在水平轨道的C处,物体从A点由静止下滑,沿BC运动并撞击弹簧,在弹簧被压缩的过程中, 能转化成 能。
【判断题】租赁他人柜台或者场地的经营者,应当标明其真实名称和标记。
A.
正确
B.
错误
【简答题】租赁他人柜台或者场地的经营者,应当标明其( )和( )。
【多选题】租赁他人柜台或者场地的经营者,应当标明其()。
A.
经营者姓名和家庭住址
B.
真实名称
C.
身份证明
D.
真实标记
【单选题】MR工成像参数有()
A.
T2
B.
TI
C.
流速
D.
质子密度
E.
以上全对
【简答题】小球的质量为m,沿着光滑的弯曲轨道滑下,轨道的形状如图.
【简答题】如图所示,轨道ABC光滑,弹簧固定在水平轨道的C处.小球从A点由静止开始下滑的过程中,______能转化为______能;在撞击到弹簧使弹簧被压缩的过程中,______能转化成______能.(选填“动能”、“重力势能”或“弹性势能”)
【简答题】小球的质量为m,沿着光滑的弯曲轨道滑下,轨道的形状如图.
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