A-A+

A clearly visible beneath of RT-flex engines is their operation at all ship speedsThis is

2018-02-02 11:09:14 其它问题 阅读

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A clearly visible beneath of RT-flex engines is their operation at all ship speedsThis is achieved by the superior combustion performance.

A.shockless

B.smokeless

C.no vibration

D.noiseless

请帮忙给出正确答案和分析,谢谢!

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