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【判断题】
独立需求的需求数量和需求时间与其他的变量存在一定的相互关系，可以通过一定的数学关系推算得出A.
正确
B.
错误
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【简答题】影响土壤耕性的主要因素是什么?
【单选题】One plausible explanation of the U.S. productivity slowdown starting in 1973 is that it was the result of the time needed to adapt to new technology. This explanation would require that
A.
workers withdraw from the labor force to learn about the new technology.
B.
a large number of new entrants be attracted to the labor force.
C.
managers be reluctant to adopt changes.
D.
workers time at their jobs be diverted from production to learning the technology.
【判断题】Starting from 1977, AAA has inspected and ranked hotels in the U.S., Canada, and Mexico using a scale from 1 to 5 diamonds.
A.
正确
B.
错误
【简答题】e____ n.[u] the process of starting or creating sth. such as an organization 建立;创立;设立
【简答题】We rely on coal, oil and fossil fuels for over 80 percent of our current (1) 能源消耗 (B4U7) -a situation which shows little sign of changing over quite a long period of time. On top of this (2) 能源需求 (B4U...
【单选题】You manually create an additional listener process，L1，for databases PROD， PAYDB and FINDB. While starting up the listener process，you get the following error message： LSNRCTL> start l1 Starting /u01...
A.
stop and restart the listener process
B.
set the TNS_ADMIN environmental variable
C.
stop all running listener processes and restart the listener process
D.
change the port number to an unused port number and restart the listener process
E.
change the IP address to host machine name in the LISTENER.ORA file and restart the listener process
【简答题】在市场经济环境下,客户是公司生存发展的重要因素,一般分为现有客户和 。
【简答题】将下列二进制数用8421BCD码表示，或将8421BCD码数转换成二进制数：
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