更多"The Zip Code, the numerical system,"的相关试题:
[单项选择]The Zip Code system is used so as to ______.
A. read addresses quickly.
B. handle mail by machines.
C. sort out mail very fast.
D. do all of the above.
[单项选择]The second digit in the Zip Code identifies ______.
A. two or three states.
B. a part of populous states.
C. a state.
D. all of the above.
[单项选择]下列程序实现对ZIP 文件file. zip 的检索，在横线处填入正确的语句是( )。
package test;
import jav
A. en = zis. getNextEntry()B. en == zis.getNextEntry(C. en=zis. getEntry()D. zis.getNextEntry()
[单项选择]关系模式CSZ(CITY,ST,ZIP)其属性组上的函数依赖集为F=(CITY,ST)→ZIP， ZIP→CITY，关系模式CSZ的主属性是
A. ZIP
B. CITY,ST,ZIP
C. CITY,ZIP
D. ST,ZIP
[单选题]Code A0000 is available for the _______ use by ATC.
A.provisional
B.routine
C.emergency
D.regular
[单选题]SSR Code A7500 means _______ .
A.departure
B.arrival
C.unlawful interference
D.engine failure
[单项选择]The highly efficient modem communication system began ______.
A. over a century ago
B. in the middle 1960s
C. in the late 1980s
D. in the year 1980
[单项选择]The underwater listening system was originally designed ______.
A. to trace and locate enemy vessels
B. to monitor deep-sea volcanic eruptions
C. to study the movement of ocean currents
D. to replace the global radio communications network
[单选题]Code 7500 alerts ATC that _______ .
A.an aircraft has been hijacked
B.the failure of two-way radio communications has been encountered
C.emergency condition exists
D.false alarms have been sent out
[单项选择]Braille, the universally accepted system of writing used by blind persons, consists of sixty- three characters.
A. catalog
B. method
C. committee
D. punctuation
[单项选择]What is the basis for the banking system
[单项选择]The opponents of a system of guaranteed existence minimum ______.
A. definitely believe in the inherent laziness in human nature
B. may want to force others to accept unfavorable work With the capital
C. are mainly government officials who are old- fashioned
D. think it necessary to develop the economy by pushing people
[单项选择]
Passage Two
Clifford Stoll ran a computer system in Berkeley, California. As a system administrator, he kept a close eye on the records. One day, Stoll found something strange in the payment record. There was a 75 cents mistake. One of the thousands of users had used the system for 75 cents worth of time and not paid for it.
It might sound like very little money to worry about. But that 75 cents was the first clue Stoll had to a much bigger problem--that a hacker had broken into Stoll’ s computer system. Who was it Stoll spent the next year trying to find out. During that time the hacker used the system in Berkeley as a starting point to break into military computer systems all over the United States.
Stoll had to keep track of the hacker’s activities on the computer without the hacker’ s knowing someone was watching him. Stoll even made up huge files of false information so the hacker would have lots to read. When the hacker spent
A. was a sign that someone had broken into Stoll' s system
B. would cause serious health problems
C. would make Stoll a very rich man
D. was found out by a Berkeley student
