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【简答题】
阅读短文,根据短文内容及首字母提示,在空白处填入一个适当的单词 Coober Pedy is a small town in the Australian desert (沙漠). It's famous not only fo r its opals (猫眼石) , but also for a very unusual小题1: r________—the people live and work underground. Why do people choose to live under the ground? To avoid (避开) the小题2:h_______ days and cold nights-daytime temperatures can rise to 50 °C or more and on a cold night they can fall to小题3:z_______. The locals say that their strange lifestyle is the only answer小题4: t________ the unpleasant climate (气候) . In the underground homes,the temperature is always a very pleasant 19°C to 24°C .But that's not the only advantage ; the people there don't need to pay builders if 小题5: t_______want to build a home or make any changes. You would be very surprised to see 小题6: h________well people manage to live underground. They have modern kitchens and bathrooms, sometimes even spas (温泉)“People think it's impossible to live here and that we're like ancient people,小题7: b_______ that's not true. ' says Bev Smith, who has lived in Coober Pedy for over 30 years. When my husband, Larry, and I first came here, life was very小题8: d _______ and many people decided to leave. But now, things have小题9: c________a lot and we’re very comfortable. We now have underground shops, hotels, r estaurants, cafes and churches!” Abigail and Brian Tynan 小题10:1_______ their large house in Melbourne(墨尔本) two years ago to have in an underground home. 'My mouth fell open when I saw my wonderful underground home,' remembers Brian. ' I really enjoy living here. '
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【单选题】凸轮机构按等加速等减速运动规律运动时,会产生
A.
柔性冲击
B.
刚性冲击
C.
始终不会出现冲击
D.
以上答案均不对
【单选题】— I hope you liked the concert last night. — How on earth do you know I went to the concert? I __________ you.
A.
haven’t told
B.
hadn’t told
C.
didn’t tell
D.
won’t tell
【单选题】下列对数据库的定义正确的是( )
A.
包括数据库的规划、设计、维护和管理
B.
以数据库为基础的各种应用程序。
C.
数据的汇集,它们以一定的形式存于存储介质。
D.
管理数据库的软件,它实现数据库的各种功能。
【简答题】凸轮机构从动件按等速规律运动时,在运动开始和终止的位置,加速度有突变,会产生 , 凸轮机构从动件按等加速等减速规律运动时,在运动开始和终止的位置,加速度有突变,会产生 。
【单选题】一台 P4/1 . 5G/512MB/80G 的个人计算机,其 CPU 的主频是 ________ 。
A.
512MHz
B.
1500MHz
C.
80000MHz
D.
4MHz
【单选题】--I hope you liked the movie last night. --How on earth do you know I went to the cinema? I ______you.
A.
haven’t told
B.
hadn’t told
C.
didn’t tell
D.
wouldn’t tell
【单选题】—I hope you enjoyed yourself at Susan’s birthday party. —How do you know I went to her party? I remember I          you .
A.
don’t tell
B.
didn’t tell
C.
haven’t told
D.
hadn’t told
【简答题】某种皮衣价格为1650元,打八折出售可盈利10%。那么若以1650元出售,可盈利( )元。
【单选题】实现数据库管理和维护功能的软件是
A.
DB
B.
DBMS
C.
DBS
D.
DBAS
【单选题】一台P4/1.5G/512MB/80G的个人计算机,其CPU的时钟频率是________。
A.
512MHZ
B.
1500MHZ
C.
80000MHZ
D.
4MHZ
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