The reason why more and more of the large merchant
The reason why more and more of the large merchant vessels are being powered by medium-speed diesel engines is .
A.they operate between 150 and 450 rpm
B.they are connected to the propeller by gearing
C.their smaller size and weight
D.they can be connected directly to the propeller without gearing
请帮忙给出正确答案和分析，谢谢！
参考解答
4j7***780
2024-06-15 00:54:15
正确答案：C
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