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【单选题】
在 SQL 中,建立视图的命令为( )
A.
CREATE SCHEMA
B.
CREATE TABLE
C.
CREATE VIEW
D.
CREATE INDEX
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参考答案：
举一反三
【单选题】My I have two ______ instead of beans, please?
A.
corn's ear
B.
corn ears
C.
ear of corns
D.
ears of corn
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【单选题】Suppose that corn farmers want to increase their total revenue. Knowing that the demand for corn is inelastic, corn farmers should
A.
plant more corn so that they would be able to sell more each year.
B.
increase spending on fertilizer in an attempt to produce more corn on the acres they farm.
C.
reduce the number of acres on which they plant corn.
D.
contribute to a fund that promotes technological advances in corn production.
查看完整题目与答案
【判断题】价值主张是商业模式的核心要素之一。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If corn farmers know that the demand for corn is inelastic, and they want to increase their total revenue, they should all
A.
plant   more corn so that they would be able to sell more each year.
B.
increase   spending on fertilizer in an attempt to produce more corn on the acres they   farm.
C.
reduce   the number of acres they plant in corn.
D.
contribute   to a fund that promotes technological advances in corn production.
查看完整题目与答案
【简答题】A.American Indians and corn. B.The planting techniques of corn. C.The joy of harvest. D.Various ways to prepare corn.
查看完整题目与答案
【单选题】If a drought increases the price of corn by 10% and decreases the quantity of corn demanded by 5%, then demand for corn is
A.
elastic and total revenue to corn farmers will decrease
B.
inelastic and total revenue to corn farmers will decrease
C.
elastic and total revenue to corn farmers will increase.
D.
inelastic and total revenue to corn farmers will increase.
查看完整题目与答案
【简答题】Onethird of corn planted in America was genetically modified corn last year.
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【单选题】爱因斯坦经过修改和扩展的广义相对论的方程式在1915年11月的第三个星期被确认正确地描述了()的过程。
A.
金星近日点
B.
金星远日点
C.
水星近日点
D.
水星远日点
查看完整题目与答案
【单选题】Which of the following statement is NOT true about corn?
A.
Corn is a kind of vegetable
B.
Corn can be stored for a long time
C.
Corn can be used to make alcohol
D.
Corn is probably even more popular than potatoes all over the world
查看完整题目与答案
【简答题】Compared with the hybrid corn, the native corn is poor in ______.
查看完整题目与答案
相关题目：
【单选题】My I have two ______ instead of beans, please?
A.
corn's ear
B.
corn ears
C.
ear of corns
D.
ears of corn
查看完整题目与答案
【单选题】Suppose that corn farmers want to increase their total revenue. Knowing that the demand for corn is inelastic, corn farmers should
A.
plant more corn so that they would be able to sell more each year.
B.
increase spending on fertilizer in an attempt to produce more corn on the acres they farm.
C.
reduce the number of acres on which they plant corn.
D.
contribute to a fund that promotes technological advances in corn production.
查看完整题目与答案
【判断题】价值主张是商业模式的核心要素之一。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If corn farmers know that the demand for corn is inelastic, and they want to increase their total revenue, they should all
A.
plant   more corn so that they would be able to sell more each year.
B.
increase   spending on fertilizer in an attempt to produce more corn on the acres they   farm.
C.
reduce   the number of acres they plant in corn.
D.
contribute   to a fund that promotes technological advances in corn production.
查看完整题目与答案
【简答题】A.American Indians and corn. B.The planting techniques of corn. C.The joy of harvest. D.Various ways to prepare corn.
查看完整题目与答案
【单选题】If a drought increases the price of corn by 10% and decreases the quantity of corn demanded by 5%, then demand for corn is
A.
elastic and total revenue to corn farmers will decrease
B.
inelastic and total revenue to corn farmers will decrease
C.
elastic and total revenue to corn farmers will increase.
D.
inelastic and total revenue to corn farmers will increase.
查看完整题目与答案
【简答题】Onethird of corn planted in America was genetically modified corn last year.
查看完整题目与答案
【单选题】爱因斯坦经过修改和扩展的广义相对论的方程式在1915年11月的第三个星期被确认正确地描述了()的过程。
A.
金星近日点
B.
金星远日点
C.
水星近日点
D.
水星远日点
查看完整题目与答案
【单选题】Which of the following statement is NOT true about corn?
A.
Corn is a kind of vegetable
B.
Corn can be stored for a long time
C.
Corn can be used to make alcohol
D.
Corn is probably even more popular than potatoes all over the world
查看完整题目与答案
【简答题】Compared with the hybrid corn, the native corn is poor in ______.
查看完整题目与答案
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