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【单选题】
下列关于SQL语言索引（index）的叙述中，不正确的是（）。
A.
系统在存取数据自动选择合适的索引作为存取路径
B.
使用索引可以加快查询语句的执行速度
C.
在一个基本表上可以创建多个索引
D.
索引是外模式
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参考答案：
举一反三
【单选题】在原始社会文化遗存中,首开世界种植水稻之先河的是_________
A.
长江流域的河姆渡文化
B.
长江流域的良渚文化
C.
黄河流域的仰韶文化
D.
黄河流域的大汶口文化
查看完整题目与答案
【单选题】急性黄疸型肝炎病人尿中有胆红素是因为
A.
血胆固醇过多
B.
血直接胆红素过多
C.
血尿素氮过多
D.
血肌酐过多
E.
血尿胆原过多
查看完整题目与答案
【单选题】某病人出现黄疸,检查发现其血清未结合胆红素明显升高,尿胆红素阴性,尿和粪便中胆素原明显增多。该病人出现黄疸的原因最有可能的是
A.
肝硬化
B.
胰头癌
C.
急性溶血
D.
急性肝炎
E.
胆结石
查看完整题目与答案
【单选题】听力原文：M: Here are our price lists. The quotations are all in US dollars, not FOB. I'm sure you'll find our prices most competitive. W: But these prices are much higher than the ones you quoted half a y...
A.
Husband and wife
B.
Boss and employee
C.
Teacher and student
D.
Negotiators
查看完整题目与答案
【单选题】If the hotel has a room’s fixed price of 200 US dollars, most likely the customers are not going to buy with a price of _______.
A.
150 US dollars
B.
175 US dollars
C.
200 US dollars
D.
250 US dollars
查看完整题目与答案
【简答题】所有投影线相互平行并垂直投影面的投影法称为（）。
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【判断题】Pay to ABC Co. providing the goodsthey supply are complied with contract the sum of ten thousand US dollars
A.
正确
B.
错误
查看完整题目与答案
【简答题】判断以下汇票文句是否构成无条件支付命令 1、 PAY TO ABC COMPANY OR ORDER THE SUM OF ONE THOUSAND US DOLLARS ONLY. 2 、 PAY TO ABC COMPANY OR ORDER THE SUM OF ONE THOUSAND US DOLLARS ONLY PROVIDING THE GOODS THEY SUPPLY ARE ...
查看完整题目与答案
【判断题】Tourists carrying foreign currency in cash equivalent to 5,000 US dollars or more are required to declare when going through Customs.
A.
正确
B.
错误
查看完整题目与答案
【单选题】In valuation, your risk free has to be a long term, default- free rate. When valuing a company in US dollars, we often use the 10- year US T. bond rate as the risk free rate. In the last few years, th...
A.
a. Continue to use it the 10- year bond rate the risk free rate since you have no choice
B.
b. Switch to using the US treasury bill rate, since default is less likely in the short term
C.
c. Estimate a default spread for the US government and reduce the treasury bond rate by that spread
D.
d. Use the rate on a 10- year Swiss Government bond, denominated in Swiss francs (since the Swiss government has no default risk)
E.
e. None of the above
查看完整题目与答案
相关题目：
【单选题】在原始社会文化遗存中,首开世界种植水稻之先河的是_________
A.
长江流域的河姆渡文化
B.
长江流域的良渚文化
C.
黄河流域的仰韶文化
D.
黄河流域的大汶口文化
查看完整题目与答案
【单选题】急性黄疸型肝炎病人尿中有胆红素是因为
A.
血胆固醇过多
B.
血直接胆红素过多
C.
血尿素氮过多
D.
血肌酐过多
E.
血尿胆原过多
查看完整题目与答案
【单选题】某病人出现黄疸,检查发现其血清未结合胆红素明显升高,尿胆红素阴性,尿和粪便中胆素原明显增多。该病人出现黄疸的原因最有可能的是
A.
肝硬化
B.
胰头癌
C.
急性溶血
D.
急性肝炎
E.
胆结石
查看完整题目与答案
【单选题】听力原文：M: Here are our price lists. The quotations are all in US dollars, not FOB. I'm sure you'll find our prices most competitive. W: But these prices are much higher than the ones you quoted half a y...
A.
Husband and wife
B.
Boss and employee
C.
Teacher and student
D.
Negotiators
查看完整题目与答案
【单选题】If the hotel has a room’s fixed price of 200 US dollars, most likely the customers are not going to buy with a price of _______.
A.
150 US dollars
B.
175 US dollars
C.
200 US dollars
D.
250 US dollars
查看完整题目与答案
【简答题】所有投影线相互平行并垂直投影面的投影法称为（）。
查看完整题目与答案
【判断题】Pay to ABC Co. providing the goodsthey supply are complied with contract the sum of ten thousand US dollars
A.
正确
B.
错误
查看完整题目与答案
【简答题】判断以下汇票文句是否构成无条件支付命令 1、 PAY TO ABC COMPANY OR ORDER THE SUM OF ONE THOUSAND US DOLLARS ONLY. 2 、 PAY TO ABC COMPANY OR ORDER THE SUM OF ONE THOUSAND US DOLLARS ONLY PROVIDING THE GOODS THEY SUPPLY ARE ...
查看完整题目与答案
【判断题】Tourists carrying foreign currency in cash equivalent to 5,000 US dollars or more are required to declare when going through Customs.
A.
正确
B.
错误
查看完整题目与答案
【单选题】In valuation, your risk free has to be a long term, default- free rate. When valuing a company in US dollars, we often use the 10- year US T. bond rate as the risk free rate. In the last few years, th...
A.
a. Continue to use it the 10- year bond rate the risk free rate since you have no choice
B.
b. Switch to using the US treasury bill rate, since default is less likely in the short term
C.
c. Estimate a default spread for the US government and reduce the treasury bond rate by that spread
D.
d. Use the rate on a 10- year Swiss Government bond, denominated in Swiss francs (since the Swiss government has no default risk)
E.
e. None of the above
查看完整题目与答案
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