Compared with steam locomotives, diesel locomotives have the following advantages.

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A.Diesel locomotives have greater performance.

B.Diesel locomotives have greater flexibility.

C.Diesel locomotives have substantially lower operating costs.

D.Diesel locomotives have substantially lower maintenance costs.

参考答案:

答案：Diesel locomotives have greater performance.；Diesel locomotives have greater flexibility.；Diesel locomotives have substantially lower operating costs.；Diesel locomotives have substantially lower maintenance costs.

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Compared with steam locomotives, diesel locomotives have the following advantages.

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Compared with steam locomotives, diesel locomotives have the following advantages.

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