单选题船舶从静止状态开进车,启动时间与()。A定常速度无关B定常速度成正比C定常速度的平方成正比D定常速度的立方成正比
单选题
船舶从静止状态开进车,启动时间与()。
A
定常速度无关
B
定常速度成正比
C
定常速度的平方成正比
D
定常速度的立方成正比
参考解析
解析:
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