单选题Suppose the rated capacity of the main engine of a ship is 10,000 KW at 100 rated rpm, then when at 80 rpm its capacity should be （）.A800 KWB5120 KWC6400 KWD4180 KW
单选题
Suppose the rated capacity of the main engine of a ship is 10,000 KW at 100 rated rpm, then when at 80 rpm its capacity should be （）.
A
800 KW
B
5120 KW
C
6400 KW
D
4180 KW
参考解析
解析：
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