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1．If a SIGMET alert is announced, how can information contained in the SIGMET be obtained? A．ATC will announce the hazard and advise when information will be provided in the FSS broadcast. B．By contacting a weather watch station. C．By contacting the nearest AFSS. C 2. On the constant pressure analysis chart, aircraft and satellite observations are used in the analysis over areas of sparse data. An aircraft observation is plotted using A．a station circle at the aircraft location. B．a square at the aircraft location. C．a star at the aircraft location. B 3. Freezing Point Depressant (FPD) fluids are highly soluble in water; however, A．ice is slow to absorb it but fast to melt when in contact with FPD. B．ice absorbs it very fast but is slow to melt when in contact with it. C．ice is slow to absorb it, and to melt when in contact with it. C 4. What information is provided by a Convective Outlook (AC)? A．It describes areas of probable severe icing and severe or extreme turbulence during the next 24 hours. B．It provides prospects of both general and severe thunderstorm activity during the following 24 hours. C．It indicates areas of probable convective turbulence and the extent of instability in the upper atmosphere (above 500 mb). B 5．Freezing Point Depressant (FPD) fluid residue on engine fan or compressor blades A．can increase performance and cause stalls or surges. B．could cause FDP vapors to enter the aircraft but would have no affect on engine thrust or power. C．can reduce engine performance and cause surging and/or compressor stalls. C 6．What is the single source reference that contains information regarding volcanic eruption, turbulence, and icing conditions for a specific region? A．Weather Depiction Chart. B．In-Flight Weather Advisories. C．Area Forecast. B 7．Which procedure increases holding time when deicing/anti-icing an airplane using a two-step process? A．Heated Type 1 fluid followed by cold Type 2 fluid. B．Cold Type 2 fluid followed by hot Type 2 fluid. C．Heated Type 1 or 2 fluid followed by cold Type 1 fluid. A 8．Weather conditions expected to occur in the vicinity of the airport, but not at the airport, are denoted by the letters “V(C).?When V(C) appears in a Terminal Aerodrome Forecast, it covers a geographical area of A．a 5 to 10 statute mile radius from the airport. B．a 5-mile radius of the center of a runway complex. C．10 miles of the station originating the forecast. A 9．Snow on top of deicing or anti-icing fluids A．need not be considered as adhering to the aircraft. B．must be considered as adhering to the aircraft. C．must be considered as adhering to the aircraft, but a safe takeoff can be made as it will blow off. B 10．Where are jetstreams normally located? A．In areas of strong low pressure systems in the stratosphere. B．At the tropopause where intensified temperature gradients are located. C．In a single continuous band, encircling the Earth, where there is a break between the equatorial and polar tropopause. B 11．A strong wind shear can be expected A．on the low pressure side of a 100-knot jetstream core. B．where the horizontal wind shear is 15 knots, in a distance equal to 2.5?longitude. C．if the 5°C isotherms are spaced 100 NM or closer together. A 12．What should the deice/anti-ice fluid temperature be during the last step of a two-phase process? A．Hot B．Warm C．Cold C 13．Which type clouds may be associated with the jetstream? A．Cumulonimbus cloud line where the jetstream crosses the cold front. B．Cirrus clouds on the equatorial side of the jetstream. C．Cirrostratus cloud band on the polar side and under the jetstream. B 14．On the constant pressure analysis chart, satellite and aircraft observations are used in the analysis, over areas of sparse data. A satellite observation plotted using A．a station circle at the cloud top location. B．a square at the cloud top location. C．a star at the cloud top location. C 15．When flying over the top of a severe thunderstorm, the cloud should be overflown by at least A．1,000 feet for each 10 knots windspeed. B．2,500 feet. C．500 feet above any moderate to severe turbulence layer. A 16．At what time are current AIRMETs broadcast in their entirety by the Hazardous Inflight Weather Advisory Service (HIWAS)? A．15 and 45 minutes after the hour during the first hour after issuance, and upon receipt. www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：90道FAA真题
