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问题:

[单选] If a severe leak develops in the electro-hydraulic steering gear unit is necessary when()

A . Loss of vessel steering
B . Overheating of the gyrocompass
C . Jamming of the six-way vale
D . Jamming of the follow-up device

变电站母线故障后,值班调控员接到现场运维人员检查结果后,应如何处理? 客户经理不能重复建立同一个潜在客户信息。 The safe working load for the assembled cargo gear and the minimum angle to the horizontal for which the gear is designed shall be marked on the(). deck。 head of the boom。 heel of the boom。 mast or king post。 变电站配电网出线故障如何处理? 简述计算机控制系统的工作原理。 If a severe leak develops in the electro-hydraulic steering gear unit is necessary when()
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