Compared to a constant pitch propeller a controll
Compared to a constant pitch propeller, a controllable pitch propeller
A.more efficiently uses available engine power
B.operates at a lower efficiency at a fixed speed
C.produces the same torque at lower engine power
D.develops its rated power at a lower speed
请帮忙给出正确答案和分析，谢谢！
参考解答
4j7***780
2024-06-15 02:54:26
正确答案：A
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