更多"The number of mobile phones being u"的相关试题:
[单项选择]The cell phones are often used by ______.
A. a few people
B. most people
C. young people only
D. children in school only
[单项选择]The warship is now being used as a
A. training centre.
B. museum.
C. cargo ship.
D. hotel.
[单项选择]All of the following Were suggested as being used by sleep researchers EXCEPT ______.
A. electrodes
B. hypnosis
C. charts
D. recorders
[单项选择]All of the following were suggested as being used by sleep researchers except
A. projection.
B. hypnosis.
C. charts.
D. recorders.
[单项选择]Inverse ARP is being used in the TestKing frame relay network. What is the purpose of Inverse ARP?（）
A. To ma a known IP address to a MAC address
B. To map a known DLCI to a MAC address
C. To ma a known MAC address to an IP address
D. To ma a known DLCI address to a IP address
E. To ma a known IP address to a SPID address
F. To ma a known SPID address to a MAC address
[单项选择] You find this query being used in your Oracle 12c database: Which method a used by the optimizer to limit the rows being returned?（）
A. A filter is added to the table query dynamically using ROWNUM to limit the rows to 20 percent of the total rows
B. All the rows are returned to the client or middle tier but only the first 20 percent are returned to the screen or the application.
C. A view is created during execution and a filter on the view limits the rows to 20 percent of the total rows.
D. A TOP-N query is created to limit the rows to 20 percent of the total rows
[单项选择]When an e-mail phone is being used to make phone calls, it ______.
A. cannot receive new messages
B. send out a signal of new messages
C. cannot display e-mail messages
D. automatically checks new messages
[单项选择]______ quantities of water are being used nowadays with the rapid development of industry and agriculture.
A. Excessive
B. Extensive
C. Extreme
D. Exclusive
[单项选择]Gene technology is already being used in a ______ of fields.
A. variety
B. various
C. variant
D. scarcity
[单项选择]Specially trained dogs are being used to__________ the trapped mountain climbers in the Northwest.
A. watch over
B. keep track of
C. come up with
D. go in for
[单项选择]It is because English is being widely used at present ______.
A. why we learn it hard
B. that we learn it hard
C. which we must learn
D. when we should learn
[单项选择]What used to be the danger in being a man according to the first paragraph
A. A lack of mates.
B. A fierce competition.
C. A lower survival rate.
D. A defective gene.
[单项选择]I didn't know your mobile phone number; otherwise I （）you the moment I got to Washington。
A. have rung
B. wound ring
C. have rung
D. wound have rung
[单项选择]Cellular phones are wireless mobile phones that ______ and receive computer-controlled radio signals.
A. transmit
B. give off
C. dispatch
D. launch
[单项选择]Parents buy mobile phones for their children because （）
A. mobile phones are very fashionable with teenagers
B. they can call home if they are in trouble and need help
C. they can use mobiles to play simple computer games
D. mobile phones enable teenagers to give up smoking
