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  3. Airline: Newly developed collision-avoidance systems, although not fully tested to discover potential malfunctions, must be inst

Airline: Newly developed collision-avoidance systems, although not fully tested to discover potential malfunctions, must be inst

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问题 Airline: Newly developed collision-avoidance systems, although not fully tested to discover potential malfunctions, must be installed immediately in passenger planes. Their mechanical warnings enable pilots to avoid crashes. Pilots: Pilots will not fly in planes with collision-avoidance systems that are not fully tested. Malfunctioning systems could mislead pilots, causing crashes. The pilots’ objection is most strengthened if which of the following is true?
选项 A、It is always possible for mechanical devices to malfunction.
B、Jet engines, although not fully tested when first put into use, have achieved exemplary performance and safety records.
C、Although collision-avoidance systems will enable pilots to avoid some crashes, the likely malfunctions of the not-fully-tested systems will cause even more crashes.
D、Many airline collisions are caused in part by the exhaustion of overworked pilots.
E、Collision-avoidance systems, at this stage of development, appear to have worked better in passenger planes than in cargo planes during experimental flights made over a six-month period.
答案C
解析 选项(C)指出飞行员认为可能发生的事情有可能发生，因此，(C)是正确答案；选项(A)不合适，因为它没有提到飞行员，那些可能被误导的人最关心的功能失灵问题，(A)也没有将经过测试的和未经过完全测试的系统区分开来；选项(B)不合适，可以用来加强飞行员反对意见的关于使用未充分测试设备的例子只能是有负面结果的例子；但(B)提出一个正面结果的例子；选项(D)不合适，因为它提到的是需要解决是否应该立即安装该避免撞机系统的问题；选项(E)不合适，因为它没有提供任何证据说明任何功能失灵会误导飞行员造成撞机。
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