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As a network engineer， do you know for what purpose SDM uses Security Device Event Exchange（SDEE）？（）
A . to provide a keepalive mechanism
B . to pull event logs from the router
C . to extract relevant SNMP information
D . to perform application-level accounting
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High firing pressures and a low exhaust temperature in a diesel engine may result from （）.
A . decreased piston to cylinder head clearance
B . increased exhaust system back pressure
C . early fuel injection timing
D . low scavenge air temperature
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A平台井口控制屏直接受A平台（）控制、受安装在井口的HI-LOW开关影响
A . A、中控系统
B . B、平台控制屏
C . C、仪表风系统
D . D、注水系统
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You need to configure a GRE tunnel on a IPSec router. When you are using the SDM to configurea GRE tunnel over IPsec， which two parameters are required when defining the tunnel interfaceinformation？（）
A . The crypto ACL number
B . The IPSEC mode （tunnel or transport）
C . The GRE tunnel interface IP address
D . The GRE tunnel source interface or IP address， and tunnel destination IP address
E . The MTU size of the GRE tunnel interface
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传输时延（Delay or Latency）
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Either a low injection pressure or a leakage of piston rings is able to lead （）.
A . a high exhaust temperature
B . a high smoky exhaust
C . a high output
D . a high compressio
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Which of the following settings will reduce packet overhead and overall latency in a standalone point-to-point bridge deployment？（）
A . enable concatenation on the non-root bridge only
B . enable concatenation on the root bridge only
C . enable concatenation on both the root bridge and non-root bridge
D . enable concatenation on the root bridge and set it as desirable on the non-root bridge
E . set concatenation as desirable on the root bridge and enable it on the non-root bridge
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When designing a converged network， which measures can be taken at the building access layerto help eliminate latency and ensure end-to-end quality of service can be maintained？（）
A . rate limit voice traffic
B . configure spanning-tree for fast link convergence
C . isolate voice traffic on separate VLANs
D . classify and mark traffic close to the source
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Compared to a low pressure system，generally the air in a high is（）.
A . warmer，less dense，and less stable
B . cool，more dense，and drier
C . muggy and cloudy
D . extremely moist with high relative humidity
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In the Southern Hemisphere winds in a low pressure system rotate in a（）.
A . clockwise direction
B . northeasterly direction
C . northerly direction
D . counterclockwise directio
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Fuel oil having a low cetane rating could result in（）
A . improved cold weather starting
B . excessive fuel oil consumption
C . reduced ignition lag
D . smoother engine operatio
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Low compression pressure in a diesel engine is caused by（）
A . low water in the expansion tank
B . improperly seated valves
C . low fuel oil pressure
D . worn or broken cylinder liner sealing ring
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在LCP盘上按压相应的“扣车”按钮，在LOW上发生A类报警。
A . 正确
B . 错误
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A low HDOP (Horizontal Dilution of Precision) number such as 2 indicates a （）.
A . poor fix
B . good fix
C . poor signal quality
D . good signal quality
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The main difference between a motor control circuit containing low voltage protection and low voltage release is that the latter contains （）.
A . a magnetic operating coil
B . normally open line contacts
C . thermal-overload protection
D . a momentary-contact start butto
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Which of the following settings will reduce packet overhead and overall latency in a standalonepoint-to-point bridge deployment？（）
A . enable concatenation on the non-root bridge only
B . enable concatenation on the root bridge only
C . enable concatenation on both the root bridge and non-root bridge
D . enable concatenation on the root bridge and set it as desirable on the non-root bridge
E . set concatenation as desirable on the root bridge and enable it on the non-root bridge
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Low compression in a diesel engine can be caused by （）
A . clogged coolant passages
B . a leaking cylinder head gasket
C . low fuel oil pressure
D . worn or broken cylinder liner sealing ring
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A stock exchange needs extremely low latency in their disk subsystem. Which disk storage technology is mostlikely to fulfill their need?（）
A . SSD
B . SSA
C . SAS
D . SAN
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When designing a converged network, which measures can be taken at the building access layer to help eliminate latency and ensure end-to-end quality of service can be maintained? （）
A . rate limit voice traffic
B . configure spanning-tree for fast link convergence
C . isolate voice traffic on separate VLANs
D . classify and mark traffic close to the source
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Low compression in a diesel engine could be caused by（）
A . worn or broken cylinder liner sealing rings
B . high cooling water temperature
C . worn or broken piston rings
D . low fuel oil pressure
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Americans live in a low contact society.
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A generally circular low pressure area is called a (n) ______.
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若输入52，则下面程序的运行结果是 。main(){int a[8]={6,12,18,42,46,52,67,73};int low=0,mid,high=7,x;printf(\Input a x:\);scanf(\%d\,&x);while(low<=high){mid=(low+high)/2;if(x>a[mid]) low=mid+1;else if(x
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The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually loud. A late-model jumbo 747, for example, creates 100 or more decibels of sound over an eight-square-kilometer area. The Concorde spreads a 100-decibel-plus blanket of noise over some 140 square kilometers. On takeoff, the Concorde sounds like four F-4 fighter jets taking off at once. Its penetrating, low-frequency rumble makes the Concorde "completely distinctive" from other jets.
What bothers noise experts is that plenty of commonplace machines are just as loud as, or even louder than, the Concorde. A sanitation truck can be noisier, and so can a heavy diesel truck pulling away from a stop sign. One expert who has gone out of his way to dramatize the prevalent offensiveness of the city sound-scale is Dr. Thomas H. Fay, director of speech and hearing at Columbia-Presbyterian Medical Center in New York. Dr. Fay took a sound-meter into a New York City subway and proved that an approaching train can be twice as loud as the Concorde.
Since World War Ⅱ, the number of the high-powered noise-makers, from trucks and motorcycles to air conditioners and sirens has increased almost geometrically. It' s no wonder that in many areas of the country, especially in the suburbs, the average sound level has doubled in 20 years. Noise experts estimate that city noises are increasing a half-decibel a year. They found that in 1971 the quietest parts of Los Angeles--thought to be a relatively quiet city--were louder than the loudest districts of New York in 1937.
This passage mainly talks about ______ .
A．the problem of the supersonic transport plane, the Concorde
B．a comparison between the Concorde and other machines
C．the problem of noise
D．noise in the suburbs
