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题库 / Prep2007E1-CR-43
Paint on a new airliner is usually applied in two stages: first, a coat of primer, and then a top coat. A new process requires no primer, but instead uses two layers of the same newly developed coating, with each layer of the new coating having the same thickness and weight as a traditional top coat. Using the new process instead of the old process increases the price of a new aircraft considerably.
Which of the following, if true, most strongly indicates that it is in an airline's long-term economic interest to purchase new airliners painted using the new process rather than the old process?
Although most new airliners are still painted using the old process, aircraft manufacturers now offer a purchaser of any new airliner the option of having it painted using the new process instead.
A layer of primer on an airliner weighs more than a layer of the new coating would by an amount large enough to make a difference to that airliner's load-bearing capacity.
A single layer of the new coating provides the aluminum skin of the airliner with less protection against corrosion than does a layer of primer of the usual thickness.
Unlike the old process, the new process was originally invented for use on spacecraft, which are subject to extremes of temperature to which airliners are never exposed.
Because the new coating has a viscosity similar to that of a traditional top coat, aircraft manufacturers can apply it using the same equipment as is used for a traditional top coat.
增强题，增强新涂料符合长期经济效益
(A) 尽管大部分飞机仍用老方式，飞机商提供了用新方式的飞机选择；与效益无关，排
(B) prime涂层比新涂层重很多，足够影响飞机负载量；新涂层更轻，可增加飞机负载，增加经济效益，搭桥增强，正确
(C) 新涂层对腐蚀的抵抗力比prime差；削弱，方向反，排
(D) 不像老方式，新方式原来用于航天飞机，可对抗极端温度；正常飞行不会遇到极端情况，无关，排
(E) 新涂层粘度和老的外层涂层一样，可用同样设备涂覆；涂覆情况一样，无法增强，排。
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每层新的都与顶层那个（没有因为新旧而改变）的thickness and weight一样，新的更贵
但增强，
证明新比旧好（符合长期经济利益），找新的优点（两者不同之处）
A、新的被提供，无关新的优点
B、旧的比新的更重，对 airliner's load-bearing capacity 造成影响，CORRECT（新的的保质期更长，耐用）
C、新的没有旧的保护得好，削弱
D、新的用于宇宙飞船，能耐airline永远不会经历的高温；无关
E、相似之处，削弱
方案：two new coating paint
(B) prime涂层比新涂层重很多，足够影响飞机负载量；新涂层更轻，可增加飞机负载，增加经济效益，搭桥增强，正确
错选(E) 新涂层粘度和老的外层涂层一样，可用同样设备涂覆；涂覆情况一样，与经济效益无关，无法增强，排。
目的：long term economy interests
方案：two new coating paint
错选d 因为，d选项没看完，。。艹，看题不仔细“which airlines are never expoosed”从未遇到过的，说明就是多余的，
只有b选项合理，说方案可以达到效果，
using要么做状语修饰apply，要么做定语修饰coat，这里是做状语，用相同的设备来喷涂涂层；the same equipment as is used for a traditional top coat，as引导定语从句修饰equipment，=the same equipment as (that) is used for a traditional top coat。
choice b, 传统primer比新的coating更重，足以产生航班负载量的差距-> correct
注意：一定要仔细一点看题，题目说的是新涂料和老涂料最外面那一层的重量和厚度一样。