正确答案: C
0.6kg
题目:某螺旋桨半径为2m,质量为800kg,经静平衡实验测附加重物的质量为2kg,其中系数K为1.5,请问该螺旋桨允许的不平衡质量为()。
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学习资料的答案和解析:
[单选题]造成产品耗损故障期的主要原因是()。
疲劳、磨损、老化
[单选题]柴油机镀铬气缸套正常磨损率应在()mm/kh范围内。
0.01~0.03
[单选题]关于螺旋桨鸣音,下列不正确的说法是()。
导边涡流激振力引起的桨叶振动
[单选题]平台检验舵杆中心线与舵承孔中心线同轴度不合格时,应采取()措施修复。
研磨舵杆与舵叶的配合面
[单选题]The starting air system usually has () to prevent starting if anything is not in order.
interlock
[单选题]What preventative maintenance should be done frequently to diesel engine starting air receivers?()
Drain the accumulated moisture
[单选题]Which of the following conditions may need to be reduced when operating a large, low speed, main propulsion, diesel engine at low loads?()
Cooling water flow through after-coolers