A passenger plane is able to carry a fixed weight, including passengers and fuel.Which wing design would be best for such a plane?A.Design 1B.Design 2C.Design 3D.Design 4

题目

A passenger plane is able to carry a fixed weight, including passengers and fuel.Which wing design would be best for such a plane?

A.Design 1

B.Design 2

C.Design 3

D.Design 4

参考答案和解析

正确答案：B

To handle the question, you need to infer that the “best” design would be one that is most efficient in terms of its lift-to-drag ratio as well as in terms of fuel consumption. Fortunately,Tables 1 and 2 each show that design 2 is most efficient.

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A passenger plane is able to carry a fixed weight, including passengers and fuel.Which wing design would be best for such a plane?A.Design 1B.Design 2C.Design 3D.Design 4

题目

参考答案和解析

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