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【单选题】
关系数据库管理系统的3种基本关系运算不包括( )。A.
比较运算
B.
选择运算
C.
联接运算
D.
投影运算
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举一反三
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【简答题】In the box below are some of the words you have learned in this unit. Complete the following sentences with them. Change the form where necessary. cr shape curse harden issue startle response acco...
【简答题】Read the following talk about how to improve the way of teaching English . Complete the talk with appropriate collocations from the text . Remember to write the letter in each blank . A. testing str...
【单选题】The Organized Traveller's Checklist Here's a step-by-step guide to accomplishing the essentials in the weeks, days, and hours before you leave on vacation. Eight Weeks Ahead If you're going out of the...
A.
A travel agency.
B.
A travel health specialist.
C.
Passports personnel.
D.
Birth certificates personnel.
【单选题】听力原文：Compared to a meat-centered diet, meatless meals can easily supply all the essential nutrients our body requires, and cost only 20% to 30% as much. (30)
A.
A diet with meat only is not enough for our body.
B.
A diet with vegetables can sometimes be very costly.
C.
Meatless meals are equally nutritious and less expensive.
D.
Meatless meals cannot provide all the essential nutrients.
【简答题】With all the wars, fighting and sadness in the world today, it's not only necessary, but also essential to have a good sense of humor just to help us get through each and every day of our lives. Putti...
【单选题】回答下列各题： The Importance of Good Communications Effective communication is essential for all organizations. It links the activities of the various parts of the organization and ensures that everyone is ...
A.
some feedback on their job performance.
B.
an explanation of how company targets have been set.
C.
information on promotion prospects within the company.
D.
an indication of which duties they can expect assistance with.
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