【填空题】LTE系统中，随机接入过程中MSG1是可以重复多次发送的额，最多发送次数取决于（）。

A、M序列

B、根序列码

C、Preamble码

D、sync码

【填空题】Lesson 4 课后作业-词汇填空 marking Rejected takeoff Runway incursion consequence sign expeditiously airstrip stopway 1. The________is an area beyond the runway which can be used for deceleration in the event of a rejected takeoff. 2. A_________is an incident where an unauthorized aircraft, vehicle or person is on a runway, which adversely affects runway safety, as it creates the risk that an airplane taking off or landing will collide with the object. 3. In order to avoid the conflicting traffic, Airbus 320 was instructed by the ATC to climb _______to and maintain 7000 meters. 4. There can be many reasons for deciding to perform a _________, but they are usually due to suspected or actual technical failures, like an engine failure such as a compressor stall occurring during the takeoff run. 5. An_________ is a small aerodrome that consists only of a runway with perhaps fueling equipment. 6. The light array is located at the intersection of two runways and a taxiway. This _________indicates where an aircraft is to hold before entering a runway. 7. Layouts with parallel runways and/or intersecting runways increase the probability of both ATC issuing conflicting clearances and, occurrence of incursions as a__________ of flight crew errors. 8. Airport guidance_________provide direction and information to taxiing aircraft and airport vehicles.

【填空题】Lesson four Listening practice 2 Listen to the following recording and fill in the blanks with what you've heard. ____1___ lighting helps pilots find the airport in runways at night and __2__ with altitude control during landings. At towered airports, the lighting is usually controlled by the air traffic controllers. At __3___ airports, the lighting can be controlled by timers, photo __4___, or by the pilots over the common traffic advisory frequency. Pilot-controlled lighting is ___5___ by key in your microphone for a certain number of clicks within five seconds. The number of clicks determines the ___6___ of the lighting. Most pilot-controlled lighting will turn off after fifteen minutes. Information on airport lighting is found on aviation charts and in the airport facility directory. Lighted civilian land airports have a __7___ or flashing beacon that flashes alternately white and green. This beacon is usually installed at the top of a metal tower on a ___8__roof or at most controlled airports on the top of the control tower. These beacons flashed twenty-four to thirty times per minute and are aimed at an angle of one to ten degrees above the horizon. So they are best seen when you are at a distance from the airport and may be difficult to see if directly overhead. Rotated beacons are ___9___ dusk to dawn. And the controlled, airports often turned on in the daytime whenever the weather is not ___10___ for visual navigation. Military airports flashed two whites between each green while sea plane airports flash alternating yellow and white. Heliports flash green yellow white.

【填空题】AV Clip 9: Holding the SaltAV 9 Holding the Salt.avi Watch the video clip three times and complete each statement in no more than 6 words according to the information from the video clip. 1. According to a new study, if Americans cut out about half a tea spoonof salt every day, it could mean as many as _______________a year. 2. The recommended daily salt intake is______________. 3. A study estimates that cutting out just _________________could prevent anywhere from 54,000 to 99,000 heart attacks. 4. The three most _________________in America are potato, tortilla chips and popcorn. 5. The vast majority of salt in the American diet comes from___________.

【填空题】AV Clip 13:CV 13.mp4 Watch the video clip three times and fill in each blank with the information mentioned in the video. (1) __________in hands and feet. If you have had diabetes for a few years, you may start to notice numbness or tingling in your lower legs or feet. This is neuropathy. Neuropathy is a (2) ______________________of diabetes over many years. Glucose can damage the blood (3) ___________________in the feet, lower legs and hands. Numbness and tingling (4) ____________________ to touch or muscle weakness may develop. Sometimes you can control your blood glucose levels but neuropathy will still develop. The longer you have diabetes, the higher the risk of developing neuropathy. You always feel thirsty. (5) _________________ is the reason the diabetics experience (6) ________________ thirst. Your (7) _______________act as a filter and normally absorb the glucose in your blood and recycle it for your body's use. When your blood glucose is high, your kidneys cannot absorb all sugar, instead the excess sugar is (8) ______________ your urine and your body tries to flush it out of your system by producing more urine. The increased urine production and resulting dehydration causes you to be extremely thirsty.

A.PRACH

B.PAGCH

C.PDCCH

D.PDSCH

A.SIB1

B.PacketMeasurementOrder(PMO)

C.SI2Quatermessage

D.SI2QissentonPACCH

此题为判断题(对，错)。

A、小区所在的PLMN需满足以下条件之一：所选择的PLMN 或注册的PLMN或等价 PLMN 列表中的一个

B、小区没有被禁止

C、小区至少属于一个不被禁止Roaming的TA

D、对于 CSG 的小区, CSG ID 包含在UE允许的CSG列表中

E、小区满足S准则