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Passage1When it comes to airline travel, perhaps nothing has revolutionized the passenger experience more than airline apps. Indeed, they' re becoming so ubiquitous that more than 50 percent of U.S travelers have at least one airline app installed on their smart device, according to travel industry research firm Phocuswright.Maybe that's because apps make travel easier, and often are more functional than a kiosk or even an airline's own website. Passengers report that they' re often more quickly informed of a flight cancellation or gate change than an airline employee. Not all airline apps are created equal, but in general you can use an app to check in for a flight, change seats, and request and pay for an upgrade. Road warriors in particular appreciate mobile boarding passes and the ability to track their flights. Many airlines now offer free onboard streaming entertainment via apps. The Delta Air Lines app even allows users to track their bags, from check-in to carousel, while the Air France app lets passengers download magazines and newspapers from the airline's library 30 hours prior to departure.But what if you are traveling extensively on more than one airline? Global airline alliances have their own apps that allow you to view flights for all member airlines and their affiliates, including code share flights. In general, you can find flight schedules for all member airlines and track member airline flights. Airport information is available, as are details about local weather at the destination. Where's the nearest airport lounge? The app will locate it for you.The Sky Team airline alliance app goes a step further by letting its SkyPriority members (Sky Team Elite Plus members and customers with first and business-class tickets) find out exactly which SkyPriority services-including priority check in and baggage drop off, as well as access to priority security lanes and boarding lanes-are available at individual airports.You' ll find that some alliance app features are available through multiple channels of communication. For example, Sky Team members have formed their own online community by sharing traveler tricks and airport tips accessible through a variety of channels, including the app, Sky Team's website, Facebook page and a dedicated tips site. Sky Team's YouTube page features travel tips from regional celebrities.Just as airlines seem to have conquered social media, another method of communicating with travelers has just arrived. KLM Royal Dutch Airlines is the first carrier to sign up for Facebook's Messenger chat app. KLM flyers can automatically receive itineraries, flight updates, check-in notifications, boarding passes and rebook flights and communicate with customer service, all from Facebook Messenger. Messenger for Business was launched so that customers-in this case, passengers-can transact business over the messaging app in a single communication thread. Roughly 80 percent of passengers on planes traveling within the U.S. have the Messenger app installed on their smartphones, according to Facebook.Clearly, mobile apps and social media have transformed our digital lives. Airlines favor apps and other technologies because they get customers out of airport lines and off phone lines. Through their smart devices, travelers now have untethered access to travel information. A few quick taps can supply individuals with information never dreamed possible even a decade ago. And with more people using smartphones as their primary computing device, and as more people own cellphones globally, people expect technology-driven methods of communication and convenience to accelerate. Whether you' re high-tech or not, you must admit that having immediate access to the information you need sure beats getting a busy signal on a toll-free phone line.Which of the following is closest in meaning to the underlined word “untethered” in the last paragraph？
风寒感冒患者宜选用的中成药是（ ）。
表达和阐释，其实与新闻传播的内容一样重要。一套话语满足不了所有人，一个腔调难以唱遍天下。分众定位，才能精准对焦；多样表达，才能有效传播。新闻舆论工作者不应满足于当新闻信息的“搬运工”，而应成为多样化表达和传播、在多元中立主导谋共识的担纲者。不应拘泥于一格一态，而应该以表达创新来提升新闻传播力、影响力、引导力。唯其如此，才能让新闻作品成为丰富人们精神世界的强大力量。下列诗句中，最符合作者观点的是（）。
视网膜脱离是指（）。
储存物品属于丙类的是（）。
现金流量折现法是确定股票发行价格的一种方法，下列表述中，正确的有（ ）。
汇票在注明一定金额的货币外，有时还附有（）的内容。
对于凭证，下列说法正确的是（）
细小的火山灰中含有二氧化硅，这种化合物的熔点是1100摄氏度，而目前大部分飞机的涡轮发动机工作温度为1400摄氏度，一旦火山灰被吸入引擎内部，二氧化硅熔化后就会吸附在涡轮叶片和涡轮导向叶片上，导致灾难性后果。1982年，两架飞机曾经从印度尼西亚西爪哇省加隆贡火山喷发的火山灰中穿过，两架飞机的8个引擎全部停转，在从11000米高空滑翔至4000米高度后才重新启动，得以紧急迫降。这段文字主要介绍（ ）。
循环水开泵后要经常检查泵出口阀开度，出口阀开度大，（）。
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