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Energy pod: It was designed by a US company with NASA technology. It puts the human body in the best sleeping position and blocks outside noise to create an ideal napping experience. Silicon Valley high-tech companies such as Google provide the Pod for employees. White noise radio: White noise is a sound signal that contains equal power and frequency. Some radios provide white noise to mask other noises so that people can sleep without disturbance. High-tech sleepwear: A US-based company designs a nightgown with special fabric that stimulates blood flow to tired muscles helping one relax in deeper restorative sleep. Emu pillow: Inspired by emu that buried its head in sands when it’s scared, a type of pillow has been designed in China for office workers to take a nap, safe and sound. It turns the computer desk into a sleep hub with even two pockets to store the hands. 小题1:These are designed for those who . A.have enough sleep. B.are working for high-tech companies. C.are in poor health. D.are victims of sleeping sickness. 小题2:Which of the following is produced with the help of a kind of bird? A.White noise radio. B.Emu pillow. C.High-tech sleepwear. D.Energy Pod. 小题3:How do you probably get the information? A.From a book. B.From a radio program. C.From a newspaper. D.From a text message.
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【简答题】地籍测量是服务于 、 的一种专业测量工作,是测量技术与土地法学的综合应用。
【简答题】地籍测量是服务于()、房产管理与开发的一种专业测量工作,是测量技术与土地法学的综合应用。
【单选题】The author's attitude towards the privatization proposal is ______ .
A.
impartial
B.
suspicious
C.
neutral
D.
approval
【简答题】设数列 满足: 点 均在直线 上. (I)证明数列 为等比数列,并求出数列 的通项公式; (II)若 ,求数列 的前 项和 .
【简答题】(本题满分12分) 已知数列 的前 项和为 , ( ). (Ⅰ)证明数列 是等比数列,求出数列 的通项公式; (Ⅱ)设 ,求数列 的前 项和 ; (Ⅲ)数列 中是否存在三项,它们可以构成等差数列?若存在,求出一组符合条件的项;若不存在,说明理由.
【单选题】A 'poker face'(Para. 2) refers to a face which is ______.
A.
attentive
B.
emotional
C.
suspicious
D.
expressionless
【简答题】数列 中, ,点 在直线 上. (Ⅰ)求证数列 是等差数列,并求出数列 的通项公式; (Ⅱ)若 ,求数列 的前 项和 .
【单选题】没有转向ECU,但带有转向助力泵和储油罐零部件的转向系统是( )。
A.
机械转向系统
B.
液压助力转向系统
C.
电控液压助力转向系统
D.
电动助力转向系统
【单选题】转向助力泵是( )系统的零件。
A.
传动系
B.
制动系
C.
行驶系
D.
转向系
【单选题】没有转向ECU,但带有转向助力泵和储油罐零部件的转向系统是( )。
A.
机械转向系统
B.
液压助力转向系统
C.
电控液压助力转向系统
D.
电动助力转向系统
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