单项选择题
A.10%
B.15%
C.20%
D.5%
单项选择题 When ship navigating in rough sea, the first measure taken by the chief engineer to prevent the overload should be()
单项选择题 When ship navigating in rough sea, the correct operation is ()
单项选择题 The load limitation of governor should be reduced when ship navigating at sea, the main reason is to()