填空题：表达式15//4的值为__

二、填空题

(1)在长度为n的顺序存储的线性表中删除一个元素，最坏情况下需要移动表中的元素个数为n-1____。

(2)设循环队列的存储空间为Q(1:30)，初始状态为front=rear=30。现经过一系列入队与退队运算后，front=16，rear=15，则循环队列中有___29___个元素。

(3)数据库管理系统提供的数据语言中，负责数据的增、删、改和查洵的是___数据库操纵语言___。

(4)在将E-R图转换到关系模式时，实体和联系都可以表示成。__关系____。

(5)常见的软件工程方法有结构化方法和面向对象方法，类、继承以及多态性等概念属于__面向对象法____。

(6)Access的查询分为5种类型，分别是选择查询、参数查询、操作查洵、SQL查询和_交叉表查询_____查询。

(7)如果要求用户输入的值是一个3位的整数，那么其有效性规则表达式可以设置为______。

(8)在工资表中有姓名和工资等字段，若要求查询结果按照工资降序排列，可使用的SQL语句是：SELECT姓名，工资FROM工资表ORDER BY工资_DESC_____。

(9)在宏中引用窗体控件的命令格式是______。

(10)已知：Dim rs As new ADODB RecordSet，在程序中为了得到记录集的下一条记录，应该使用的方法是rs.______。

(11)在VBA中，没有显式声明或使用符号来定义的变量，其数据类型默认是______。

(12)下列程序的功能是：输入10个整数，逆序后输出。请在程序空白处填入适当语句使程序完成指定的功能。

Pnvafe Sub Command2_Click()

Dim i, j, k, temlp, arr(11)As Integer

Dim result As Scring

For k=1 T0 10

arr (k)=Val(InputBox("请输入第" ＆k＆"个数："，"数据输入窗口"))

Nexc k

i=1

i=10

Do

temp=arr(i)

arr(i)=arr(i)

arr(j)=temp

i=i+1

j= (12)

Loop While (13)

rpsult""

For k=1 TO 10

result=result ＆ arr(k) ＆ Chr(13)

Next k

MsgBox result

End Sub

【填空题】Lesson 15 Listening Comprehension-2 Listen and Fill in the blanks with what you have heard On the benefits of ADSB The world aviation continues to evolve towards 1 to improve safety, communication, surveillance and navigation by extending the protection of 1090 megahertz frequency to satellites. Significant 2 can be made that will have an immediate impact as early as in 2017. since 1940s, radar has been the primary method to 3 and it remains so until today. In recent years ADSB has become a widely accepted 4 providing critical information to stakeholders. Current systems are limited to land-based areas leaving 70% of the world uncovered, creating 5 routing over much of the world’s airspace. These global blind spots will soon be disappear in 2017. ADSB receivers on satellites will 6 from all ADSB-equipped aircraft to ATC worldwide. This will provide near 7 of ADSB-equipped aircraft in any flight information region, including currently unsurveiled oceanic, polar, desert, and 8 Space-based ADSB will enable 9 , increase operational 10 for airlines, lower emissions, expand ATM efficiency and capacity and significantly enhance safety all with little 11

【填空题】Lesson 15 课后词汇选择填空 coverage broadcast conventional runways descending originating vicinity surveillance transmissions awareness Functions of ADS-B ADS-B is a system by which aircraft constantly 1 their current position and altitude, category of aircraft, airspeed, identification, and whether the aircraft is turning, climbing or 2 over a dedicated radio data-link. The ADS-B 3 are received by air traffic control stations, and all other ADS-B equipped aircraft within reception range. Reception by aircraft of ADS-B data is known as “ADS-B in”. The initial use of ADS-B is expected to be by air traffic control and for surveillance purposes and for enhancing pilot situational 4 . ADS-B is lower cost than 5 radar and permits higher quality surveillance of airborne and surface movements. ADS-B is effective in remote areas or in mountainous terrain where there is no radar 6 , or where radar coverage is limited. ADS-B also enhances 7 on the airport surface, so it can also be used to monitor traffic on the taxiways And 8 of an airport. ADS-B equipped aircraft may also have a display unit in the cockpit picturing surrounding air traffic from ADS-B data (ADS-B in) and TIS-B (Traffic Information Service-Broadcast) data 9 from air traffic radar. Both Pilots and air traffic controllers will then be able to “see” the positions of air traffic in the 10 of the aircraft, and this may be used to provide an ASAS (Airborne Separation Assurance System). (221 words)

【填空题】Lesson 15 Listening Comprehension-1 Fill in the Blanks with what you have heard On TCAS As the direct result of accidents in 1980s leads to the wide-spread introduction to an (1) clever piece of new technology. It is called TCAS—traffic collision avoidance system. TCAS relies on a clever piece of technology called transponder--a device both (2) to radio signal. When 2 aircraft approach each other their transponders lock on and start to talk to each other. Terry is to train the pilots to use TCAS. The transponders of the aircraft (3) each other many times a second, In doing so it creates a (4) radio bubbles around each aircraft. if any time it senses those 2 bubbles might come too close for comfort, TCAS will (5) to pilots must react. And the approaching plane show up as a (6) , you can see we have got traffic below . it is climbing indicated by the arrow. It is now 600 feet below. Radio bubble is too close for comfort, the white diamond will change into an (7) . TCAS flashes up warning “ traffic, traffic” that is now (8) , 500feet below and still climbing. If the situation gets serious, the orange circle becomes (9) . TCAS orders the plane to (10) “ clime , climb” Now it is (11) . So i need to (12) the aircraft to avoid the traffic. In the simulation, TCAS orders one plane to climb and the other to descend. TCAS steers the aircraft away from each other. “ clear of traffic” and re-engaging the autopilot, and two bubbles in which the aircraft is sitting moves to safe distance apart. Technology seems to finally (13) that pilots are not able to see each other. As a direct result of LA collision, TCAS is now (14) on all commercial aircraft flying to most destinations. But TCAS system designed to (15) would one day play a part in one of the worst collisions of modern times.

【填空题】Lesson 15 词汇拓展-选词填空 beneficial merit instantaneous originate error optimize interrogation velocity maintain awareness impact emission application Fill in the blank with words or expressions in the table above 1) The actual ______of ADSB will deliver a lot benefits to both airlines and controllers. 2) The first case of coronavirus was discovered in China, it does not mean it _______in China. 3) Airline pilots earn promotions through ________ not through favoritism. 4) The maintenance crew is hired by the airlines to _______aircraft regularly to ensure their airworthiness during flight. 5) Continuous Descent Approach procedures allow the pilot to descend with lower power setting and no level-offs , thereby reducing carbon_______. 6) One of the chief benefits of ADSB is its ________updates of aircraft information such as position, speed etc. 7) AOPA President Mark Baker sent a letter to the FAA administrator urging the agency to address the negative economic ____of the mandate on general aviation. 8) Aircraft with ADSB-out automatically report their position to nearby ground stations, without need for a radar ________. 9) ADS-B equipped aircraft in their airspace enables airlines to improve operational efficiency by_______ flight paths, routes and tracks, saving significant amounts of fuel and increasing safety everywhere in the world. 10) ADS-B Out transmits information about altitude, _______, and location derived through GPS from an equipped aircraft to ground stations and to other equipped aircraft in the vicinity. 11) ADS-B in allows participating aircraft to receive traffic and weather information from ADS-B ground stations and nearby aircraft broadcasting their positions through ADS-B Out. This information can be displayed in the cockpit to improve situational _______. 12) Effective Team Resource Management in ATC requires the best use of all available resources in support of a safe and efficient operation which reduces both the incidence of human ______ 13) Though it did not appear _______, the solar panels helped to cut back energy costs significantly.

【填空题】AV Clip 15: Movie and SmokingAV 15 Movie and Smoking.avi Watch the video clip three times and complete the following passage by filling in each blank with the word from the video clip. There are many reasons why children pick up smoking, from their parents and from friends. But a new government report finds that movies are also to (1)_______. Around two-thirds of the contemporary-hit movies contain smoking, according to the report from the National Cancer Institute. And studies show the children who are (2)_________ to these movies are more likely to become smokers themselves. Cigarette uses (3)_______ in popular media as well, researchers found. Around 20% TV shows and 25% music videos show people smoking. Out-rated movies were the most likely to (4)________ smoking, so reducing kid’s exposure to adult cinema may help the problem. But experts say cutting cigarette in movies (5)________ would have a much greater impact. The good news is that the media can also have a (6)_______ influence. Television, newspapers and the Internet have all help spread the word about the health danger of smoking. Researchers say (7)_________ the power of the media to reach more people with anti-smoking messages is a major goal in the (8)_________ against tobacco.

【填空题】Lesson 15 词汇拓展 Cloze-2 Fill in the blanks with the proper form of the words in the table Level Bust availability contribute relate procedural impending clarification inadequate transmission deviation obstruction Level Bust is defined as any unauthorised vertical 1 of more than 300 feet from an ATC flight clearance. Within reduced vertical separation minima airspace, this limit is reduced to 200feet. The level bust issue only 2 to aircraft in controlled airspace or a designated Air Traffic Zone outside controlled airspace and under either radar or 3 ATC control. A Level Bust can result in loss of separation between aircraft or between an aircraft and the terrain or a ground 4 such as a mast. Level busts are becoming less dangerous because improvements in technology such as better STCA (short-term conflict alert) and Mode S have improved the ability of controllers to safely manage any consequent loss of separation. Furthermore, the 5 and proper use of TCAS provides a final safety net which significantly reduces the risk of a Mid-air Collision and GPWS has also reduces the risk of a level bust resulting in CFIT( controlled flight into terrain) accident. There are a variety of factors which 6 to the risk of level bust occurring. It may be induced by controllers. For example: The ATCO is interrupted or distracted and does not take action in time to rectify an 7 loss of separation; The ATCO assigns an incorrect altitude, or reassigns a FL after the aircraft has been cleared to an altitude; The ATCO's instructions are misunderstood because of 8 English proficiency or non-use of standard phraseology. The ATCO issues a complex 9 containing more than two instructions (e.g. speed, altitude and heading). Level busts may also be caused by the pilot’s errors in which both flight crew are uncertain about ATC level instructions but failed to ask for clearance 10

【填空题】AV Clip 15: Daily Vitamin No GoodAV 15 Daily Multivitamin.avi Watch the video clip three times and complete the content of the study by filling in each blank with the word from the video clip. 1. For millions of us they are parts of our daily routine, which is why findings of the new study are so hard to ________. Researchers are now reporting that for older women some vitamins might actually be ________. The study wanted on 40,000 women aged 55 through 69 over the course of 19 years, finding that older women who took multivitamins—B6, folic acid, magnesium, zinc or copper were at a ________ increased risk of death. About 2.4% died of things like heart disease and cancer, with women who took ________ having a 3.9% increase risk of death. 2. The report ________ other studies that found that certain other supplements may be harmful. Dietary supplements don’t require the same ________ testing that drugs do. But it is an 11-billion-dollar-a-year business as millions of Americans are convinced of their ________. And today the leading trade association that ________ the makers of dietary supplements was quick to fight back, issuing a statement that the study was ________ and did not prove that supplements caused any harm. It’s important to keep in mind that this is an ________, not a cause-and-effect study. Adding that well, it may make for interesting scientific water cooler discussion, and certainly does not warrant sweeping, overstated ________ for elderly women. 3. And the study had one notable ________—calcium. Researchers found the calcium supplements actually ________ mortality risk. So everyone is asking what should you do when one doctor we spoke to this afternoon said that there is still a lot more research that should be done in this area. But remember the ________ of healthy, balanced diet have been shown over and over again. So it’s not as easy as a pill, but it’s proven.