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【单选题】
关系数据模型上的关系运算分为______。A.
关系代数和集合运算
B.
关系代数和关系演算
C.
关系演算和谓词演算
D.
关系代数和谓词演算
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反馈参考答案：
举一反三
【单选题】—______ do you want? —No.Thanks. [ ]
A.
What other
B.
What else
C.
What other thing
D.
What else thing
【单选题】Read the following job wanted advertisement. What skill is not required to be an Assistant Manager? A Job Wanted Ad Hilton Hotel Assistant ManagerWe are looking for an enthusiastic person t...
A.
Experience of overall hotel work
B.
Good knowledge of English and possibly two other languages
C.
Experience of oversea study
D.
At least one year’s experience as an Assistant Manager.
【单选题】What might the phrase 'on the other side of the coin' in paragraph one mean?
A.
In other words.
B.
On the other hand.
C.
On the other side.
D.
As the only complement to this.
【简答题】What is the other term that the Oral Approach is referred to as?
【简答题】阅读理解。 Read the following ad Wanted A Man Art Teacher in Happy Children's School Age:18--25 Skills: good at singing, dancing and drawing pictures Working hours: 9:00 a.m.-3:00 p.m. from Monday to Frida...
【单选题】—______did you see in the picture? —Nothing. [ ]
A.
What else
B.
Who else
C.
What other
D.
Who other
【简答题】A) what B) which C) that D) other
【单选题】属于小额电子支付的是（）
A.
一位顾客在网上购买了一份电子杂志价值10元
B.
一家企业在网上购了10000个轮胎
C.
一位顾客在网上购了一台电脑
D.
以为顾客在网上购买了飞机票
【简答题】When in difficulty,what we need is not to blame each other but to help each other.
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