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视线关系（Line of Sight，LoS）
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更多 “视线关系（Line of Sight，LoS）” 相关考题
考题
___________ his mother, the boy stopped crying.
A. At sightB. In sightC. At the sight ofD. In the sight of
考题
Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid line If excess moisture is present in the system, the indicator willA.activate the driersB.change colorC.secure the compressorD.add a predetermined amount of liquid drier
考题
11g wireless signals operating at 24GHz has a maximum line of sight range of which of thefollowing?()
A. 460 feet (140 meters)B. 540 feet (165 meters)C. 560 feet (171 meters)D. 840 feet (256 meters)
考题
The height of eye correction is smaller than geometrical dip because of ______.A.the angle between the horizontal and the line of sight to the visible horizonB.index errorC.parallaxD.terrestrial refraction
考题
802.11g wireless signals operating at 24GHz has a maximum line of sight range of which of thefollowing?（）A、460 feet (140 meters)B、540 feet (165 meters)C、560 feet (171 meters)D、840 feet (256 meters)
考题
单选题Which of the problems listed could be indicated if a sight glass in the refrigerant liquid line is full of bubbles?（）A
Proper refrigerant chargeB
Faulty expansion valveC
Insufficient refrigerantD
Solenoid valve stuck open
考题
单选题In an operating refrigeration system low on refrigerant, a liquid line sight glass will（）A
be clearB
be blueC
be light greenD
show bubbles
考题
单选题You are the network administrator for your company. The network consists of a single Active Directory domain. The company has an office in San Diego， which is configured as a single Active Directory site. The company has 500 users. The company opens a new office in Los Angeles， which employs 50 users. A T1 line connects both offices. You configure the Los Angeles office as a single site. You create a subnet object for the Los Angeles office. In the Los Angeles office， you install and configure a server named DC1 as a domain controller and global catalog server. You configure the Los Angeles site to use DC1 and the Los Angeles subnet object. You configure a site link that connects the site in San Diego and the site in Los Angeles. You need to ensure that client computers in Los Angeles connect to DC1 for authentication. You also need to ensure that changes to the domain are replicated as soon as possible. What should you do？（）A
Configure the interval for the site link to its minimum value.B
Remove the Los Angeles site and move DC1 and the Los Angeles subnet object to the San Diego site.C
Create an RPCbased connection object at each of the two sites.D
Create a site link bridge between the two sites.
考题
单选题A star is observed at lower transit. The line of position derived from this sight is（）.A
on the prime verticalB
a latitude lineC
a longitude lineD
of no special significance
考题
单选题The height of eye correction is smaller than geometrical dip because of （）.A
the angle between the horizontal and the line of sight to the visible horizonB
index errorC
parallaxD
terrestrial refraction
考题
单选题A liquid indicator sight glass is useful in determining whether or not a refrigeration system is sufficiently chargedIt is generally located in the（）.A
high pressure liquid lineB
low pressure liquid lineC
high pressure vapor lineD
low pressure vapor line
考题
单选题802.11g wireless signals operating at 24GHz has a maximum line of sight range of which of thefollowing?（）A
460 feet (140 meters)B
540 feet (165 meters)C
560 feet (171 meters)D
840 feet (256 meters)
考题
单选题R_LOS与R_OOF的关系说法正确的是（）A
R_LOS比R_OOF告警级别高B
R_OOF比R_LOS告警级别高C
R_OOF和R_LOS一般同时出现D
出现R_OOF时会立即中断业务
考题
单选题Underway vessels shall at all time maintain a proper look-out（）.A
by sight and hearing onlyB
by all available means besides sight and hearingC
by all available means except sight and hearingD
by none of above means
考题
单选题On a gnomonic chart，a great circle track between Los Angeles and Brisbane will appear as a （）.A
loxodromic curveB
curved line concave to the equatorC
straight lineD
spiral approaching the poles as a limit
考题
单选题The passage is mainly about _____.A
the construction of parking spaces in Los AngelesB
the new growth pattern of the city of Los AngelesC
the public transportation system in Los AngelesD
the problem of traffic jams in Los Angeles
考题
单选题By day，you sight a vessel displaying three shapes in a vertical line. The top and bottom shapes are balls，and the middle shape is a diamond. It could be a（）.A
vessel trollingB
mineclearing vesselC
trawlerD
vessel engaged in replenishment at sea
考题
单选题When one of two vessels（）is required to keep out of the way the other must keep her course and speed.A
In sight of anotherB
Sights the anotherC
Not in sight of the otherD
In sight of one another
考题
单选题A marine sextant has the index arm set at zero and the reflected image of the horizon forms a continuous line with the actual image. When the sextant is rotated about the line of sight the images separate. The sextant has（）.A
error of perpendicularityB
side errorC
prismatic errorD
centering error
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