患者，男，35岁。肛周肿痛，肛门左侧皮肤发红伴疼痛。引起该病最可能的原因是（  ）

著名的“耶克斯—多德森定律”告近我们，中等程度的动机激起水平对学习效果的提高 ()（常考）

Passage1

When 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？

某公司的经营杠杆系数为2，预计息税前利润将增长10%，在其他条件不变的情况下，销售量将增长（　  ）。

传染病隐性感染特点不包括

尾矿坝的堆积坝采用（   ）式筑坝法时，应于坝前均匀放矿，维持坝体均匀上升，不得任意在库后或一侧岸放矿。

根据2013年6月证监会发布的《证券公司客户资产管理业务管理办法》和《证券公司集合资产管理业务实施细则》证券公司的集合资产管理计划将不再有大集合、小集合的划分。证券公司发行，投资者超过（  ）人的被定性为公募基金，纳入新《中华人民共和国证券投资基金法》调整。

患者，男，54岁，肝硬化病史5年，1年前腹部疼痛加重，1周前发现血性腹水，诊断为肝癌晚期，入院治疗。
应用镇痛药物的原则不包括

热爱和平，尊重世界各民族的优秀文化，关注全人类的共同利益，培养世界眼光是思想政治课的()。

关于意识状态的概念，下列哪项是错误的

某商业公司非常重视安全文化建设，在安全文化建设方面投入了大量的人力物力，商场内的LED大屏幕滚动播出消防等安全知识和事故案例，公司内部网站也开辟有安全宣传专栏，公司每年还组织安全有奖征文、知识竞赛等活动。为衡量企业安全文化建设效果，根据《企业安全文化建设评价准则》( AQ/T 9005)进行评价。下列关于安全文化评价指标的说法中，正确的是（  ）。