更多"An （） statement can perform a calcu"的相关试题:
[单项选择]An（）statement can perform a calculation and store the result in a variable so that it can be used later.
A. executable
B. input
C. output
D. assignment
[单项选择] A SELECT statement can be used to perform these three functions: 1.Choose rows from a table. 2.Choose columns from a table. 3.Bring together data that is stored in different tables by creating a link between them. Which set of keywords describes these capabilities?（）
A. difference, projection, join
B. selection, projection, join
C. selection, intersection, join
D. intersection, projection, join
E. difference, projection, product
[单项选择]______ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
A. Even if
B. As far as
C. If only
D. So long as
[单项选择]Which of the following statement can best summarize the main idea of the passage
A. Bangladeshi women living in Britain suffer from different levels of anxiety.
B. Western models prove to be unsuccessful in treating psychological problems of ethnic groups.
C. Mental problems of ethnic groups have not got due recognition.
D. People relate better to people of similar backgrounds.
[单项选择]Which of the following statement can NOT be drawn from the information given in para. 8_______
A. In regard to hydroelectric power, Japan is lucky to have abundant rainfall and dense concentration of population.
B. No other countries in the world have developed their resources of hydroelectricity to such an extent as Japan.
C. Some other Asian countries have also develop their resources of hydroelectricity.
D. Japan developed their resources of hydroelectricity greatly compared with America.
[单项选择]Which statement can be an inference from the output?（）
A. The FRA disk group has an asynchronous I/O bottleneck
B. The least number of I/Os are performed on the last data file in the list
C. The number of times that the backup or restore process directed the OS to wait until an I/O was complete is the highest for the last data file in the list
D. The number of times that the backup or restore process made an OS call to poll for I/O completion in Nonblocking mode is the least for the FRA disk group
[单项选择]Which statement can be the main idea of the passage
A. Glass is very useful because it has unusual qualities.
B. Light signals have changed the use of glass in industry.
C. Glass fibres have reduced the cost of telephone communication.
D. The use of glass fibres to carry telephone messages is an interesting new development.
[单项选择]Henry Ford's statement can he taken negatively because ______.
A. working people are discouraged to fight for their fights
B. there are many industries controlled by a few big capitalists
C. there is a conflicting relationship between big corporations and labor
D. public services are not run by the federal government
[单项选择]Henry Ford's statement can be taken negatively because______.
A. working people are discouraged to fight for their rights
B. there are many industries controlled by a few big capitalists
C. there is a conflicting relationship between big corporations and labor
D. public services are not run by the federal government
[多项选择]Firewall filter policers can perform which two actions?（）
A. Set the next hop.
B. Discard packets.
C. Set loss priority.
D. Sample packet content.
[单项选择]What can be inferred from the underlined statement
A. All Olympic athletes are only winners, not heroes.
B. Some Olympic athletes are only winners, not heroes.
C. Some heroes are Olympic winners.
D. All of the Olympic champions are both heroes and winners.
[多项选择]Firewall filters can perform which two actions?（）
A. Log packets.
B. Set packet metrics.
C. Count packets.
D. Decrement packet's TTL value.
[多项选择]Which two tasks can you perform using only the TO_CHAR function? （）
A. convert 10 to 'TEN'
B. convert '10' to 10
C. convert 10 to '10'
D. convert 'TEN' to 10
E. convert a date to a character expression
F. convert a character expression to a date
