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47． Tornadoes（龙卷风） from the steady-state thunderstorm associated with cold fronts and
squall line.
48． prognostic charts depicts the condition. A. exsting at the surface during the past 6
months; B. which present from the 1000 minibox through T; C. forecast to exist at
specific time in the future shown on the chart; jjh
49． Isobars on a surface weather chart represent line of equal pressure ---------sea level
50． Stationary front 特征
51． *Dry line: 两种不同气团具有相同温度产生的锋
52． *晴空颠簸和高空急流发生在冷风一侧。
1.what is a feature of a stationary front?
A.surface winds tends to flow parallel to the zone
B.weather conditions ate a combination of strong wind front
C.the warm front surface moves abort half the spead of the cold front
A
2. Which area or area of the Northern Hemisphere experience a generally East to West movement of
weather system?
A.subtropical only
B.arctie only
C.arctic and subtropical
C
3. Which weather will experience at the altitude where the dew point lapse rate and dry adiabatic rate
meet?
A.precipitation starts
B.cloud bases form
C.stable air sange to unstable air
B
4. In which meteorological condition can finite a low pressure area from
A. warm front or occluded fronts
B.slow-moving cold front or stationary front
C.cold front
B
5.Where is the usual location of a thermal low?
A. over the surface of a dry sunning region
B.over the eye of a hurricane
C.over the anti region
A
6.which weather condition is present when the tropical storm is upgraded to a hurricane
A.a clear area or hurricane eye has formed
B.sustained winds of 65 kt or more
C.highest windspeed 100 kt or more
B
7.which condition produce weathetr on the side of a large lake?
A.cold air flowing over a warmer lake may produce advection fog
B.warm air flowing over a colder lake may produce advection fog
C.warm air flowing over a colder lake may produce rain shower
B
*8.what air conditions are indicated or a weather Depiction chart? A
A.Actual sky over visibility restrictions and type of precipitation at reporting stations
B.Actual en route weather conditions between reportings station
C.Forecast ceilings ad visililities over a large geosraphic area
A
9.Constant pressure Analyses charts contain contoms is others + some contain isobars the contours depict
A.highs,lows,troughts+ridges on the surface
B.ridges, lows, troughts+high aloft
C.highs lows.troughs+ridges corrected to Msc
B
10. Which term applies when the temperature of the air change by compression of expansion with no
heat added or removed?
A.katabatic
B.advection
C.adiabatic
C
*11.where do squall lines most often develop?
A.behind a station front
B.ahead of a cold front
C.in an occluded front
B
12.Weather feature occurs art altitude levels near the tropopause can
A.abrupt temperature increase of the tropopause
B.thin layers of cirrus clouds at the tropopause level
C.maximum wind and narrow wind shear zones
C
13.which event usually occurs after an a/c passes though a front into the colder air?
A. atmosphere pressure increase
B.temperature/dewpoint decrese
C.wind direction shifts to the loft
A
*14. Atmosphere pressure change due to a TS will be at the lowest value?
A.during the downdraft and heavy rain showers
B.when the TS is approaching
C.immediately after the rain shower have stopped
B
*15.what weather is predicted by the term Vcts in a TAF
A.between 5 and 25 km
B.within 50 km
C.TS are expected in the vicinity
c
**16.CAT turbulence most likely encountered
A.constant pressure chart show 20 kt less than 60 NM apar
B.constant pressure chart show 20 kt less than 60 kt apar
C.constant pressure chart show 20 kt less than 20 kt
A
17.which type wind fllows down slope become warmer and dryer
A.volley wind
B.land Breaze
C. katabatic wind
C
18.which primary source contains informations regardings the expected weather at destination Airport
at ETA
A.radar summary and weather depiction charts
B.TAF
C.low-level prog chart
B
19.CAT maintain ware tend to as far as 100 英里
20.240-320 270-24oo 300-600
21.STAR-teminal with a instrument or visual procedure
22.一类防冰液：80% 二50% 三30%
23.maintain report 2400m
24.积冰lift reduce 30% drug increase 40%
25. Tornadoes from the steady-state thunderstorm-associated with cold fronts and equals line
26. If you want to traverse CAT areas should?
When temperature increase --->climb
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