皮皮学,免费搜题
登录
搜题
【简答题】
Passage Two Questions 62 to 66 are based on the following passage. You never see him, but they're with you every time you fly. They record where you are going,how fast you're traveling and whether everything on your airplane is functioning normally. Their ability to withstand almost any disaster makes them seem like something out of a comic book.They're known as the black box. When planes fall from the sky, as a Yemeni airliner did on its way to Comoros Islands in the India ocean June 30, 2009, the black box is the best bet for identifying what went wrong. So when a French submarine (潜水艇) detected the device's homing signal five days later, the discovery marked a huge step toward determining the cause of a tragedy in which 152 passengers were killed. In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all U.S. commercial flights by 1960. Early models often failed to withstand crashes, however, so in 1965 the device was completely redesigned and moved to the rear of the plane – the area least subject to impact – from its original position in the landing wells (起落架舱). The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to aid visibility. Modern airplanes have two black boxes: a voice recorder, which tracks pilots' conversations,and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft's final moments. Placed in an insulated (隔绝的) case and surrounded by a quarter-inch-thick panels of stainless steel, the boxes can withstand massive force and temperatures up to 2,000℉. When submerged, they're also able to emit signals from depths of 20,000 ft. Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1,2009, are in water nearly that deep, but statistics say they're still likely to turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one plane's black boxes were never recovered. 注意:此部分试题请在答题卡2上作答。 62. What does the author say about the black box? A) It is an indispensable device on an airplane. B) Its ability to ward off disasters is incredible. C) It ensures the normal functioning of an airplane. D) The idea for its design comes from a comic book.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【简答题】《股指期货投资者适当性制度实施办法(试行)》是根据( )和《关于建立股指期货投资者适当性制度的规定(试行)》等行政法规、规章及中国金融期货交易所业务规则来制定的。
【单选题】胸部切口拆线时间是
A.
3-4天
B.
5-6天
C.
6-7天
D.
7-9天
E.
9-10天
【多选题】下列哪些项目是轴流式风机的基本性能参数。
A.
工作频率
B.
工作电压
C.
工作电流
D.
风量
E.
风压
【简答题】阳图原版上 面积越大,图文越深。
【简答题】试述青霉素过敏性休克的临床表现及急救处理。
【单选题】急性白血病患者出血的原因主要是
A.
血小板减少
B.
凝血因子合成减少
C.
弥散性血管内凝血
D.
白血病细胞浸润
E.
脾功能亢进
【单选题】根据《金融期货投资者适当性制度实施办法》,个人期货投资者申请开户时,保证金账户可用资金余额不得低于( )
A.
人民币20万元
B.
人民币50万元
C.
人民币80万元
D.
人民币100万元
【简答题】秦朝秦始皇采用了战国时期阴阳家邹衍的所主张的 ,以辩护秦朝的法统。
【简答题】A.4~5天 B.6~7天 C.7~9天 D.10~12天 E.≥14天 胸部切口拆线时间
【单选题】急性白血病患者出血的原因主要是
A.
血小板减少
B.
凝血因子合成减少
C.
弥散性血管内凝血
D.
白血病细胞的浸润
E.
脾功能亢进
相关题目: