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【单选题】
Your developers have created table to store some of their program's data. After examining the slow Query Log, you see that they are using the LIKE operator and SUBSTER ( ) functions against a VARCHAR (10000) column quite often. An example of the start of one row of data: 'GREEN01020495888331993-12-10/2…' What should you do to improve the overall performance?()
A.
Convert the column to TEXT and add a fulltext index to the table
B.
Create multiple prefix indexes of differing lengths
C.
Convert their column to BINARY
D.
Redesign the table so that the most commonly searched for string patterns are in their own columns
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【判断题】当一个波形代表的有效状态数为2时,波特率和比特率在数值上相等,因此他们的含义相同。
A.
正确
B.
错误
【单选题】Where does Will want to go if he could go anywhere?
A.
New York
B.
London
C.
Paris
【多选题】俄罗斯对国际秩序观的主张从俄与中国发表的关于21世纪国际秩序的联合声明中可以看出,包括:
A.
须以公认的国际法原则和准则为基础,各国应严格遵守互相尊重主权和领土完整、互不侵犯、互不干涉内政、平等互利、和平共处的原则;
B.
联合国的地位和作用不可替代,应在国际事务中发挥主导作用;
C.
主张制定全面和广为接受的经贸体制;
D.
俄在各领域反对美国的霸权主义,对以美国为首的西方在中亚地区进行"颜色革命"以及北约东扩采取强硬反制措施,正式接纳克里米亚入俄。
【简答题】听对话,根据对话内容选择正确的答案。听三遍。 1. Why is John going to Paris? A. Because he wants to spend his holiday days. B. Because he wants to work there. 2. How many times has John been to Paris? A. Once B. Never 3. Ho...
【判断题】当一个波形代表的有效状态数为2时,波特率和比特率在数值上相等,因此它们的含义相同。
A.
正确
B.
错误
【简答题】My brother is getting 1 next month. He 2 his fiancée last year and they’ve been together ever since. They’re going to have a 3 in Paris, and then they’re coming home. They’ve got a really nice apartme...
【多选题】【多选】俄罗斯对国际秩序观的主张从俄与中国发表的关于21世纪国际秩序的联合声明中可以看出,包括:
A.
须以公认的国际法原则和准则为基础,各国应严格遵守互相尊重主权和领土完整、互不侵犯、互不干涉内政、平等互利、和平共处的原则;
B.
联合国的地位和作用不可替代,应在国际事务中发挥主导作用;
C.
主张制定全面和广为接受的经贸体制;
D.
俄在各领域反对美国的霸权主义,对以美国为首的西方在中亚地区进行"颜色革命"以及北约东扩采取强硬反制措施,正式接纳克里米亚入俄。
【单选题】妊娠期高血压疾病的基本病理变化是
A.
脑血管痉挛
B.
胎盘血管痉挛
C.
肾小血管痉挛
D.
冠状动脉痉挛
E.
全身小动脉痉挛
【单选题】听力原文:W: If I go to Paris, will you meet me there? We can visit my cousin’s new home. M: Well, I had intended to, but I changed my mind at the last moment. What does the man mean?
A.
He didn't have enough money to go to the concert.
B.
He arrived too late to hear the concert.
C.
He altered his plans suddenly.
【简答题】任务型阅读。 I am 1 . Now I am studying French in Paris. I want to invent a language machine that can help me understand as many languages as possible. Jenny, England I am a 13-year-old girl in Tibet. The Q...
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