正确答案: A
0.9892
题目:根据46艘柴油机船的调查统计,航行总时间达111万h,此期间主机停车和减速故障共1200次,如通过某运河的时间为10h,则过某运河的可靠度为()。
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学习资料的答案和解析:
[单选题]柴油机横向校中是指在()方向上活塞运动部件与固定件有准确的相对位置。
柴油机左、右
[单选题]在水平平面内,当曲柄的两个主轴承位置偏右,曲轴轴线呈右弧线弯曲(即呈“)”形)时,该曲柄的臂距差Δ-为()值。
正
[单选题]白合金艉轴承的极限轴承间隙近似等于()倍的安装间隙。
4
[单选题]消除螺旋桨鸣音的办法是改变随边0.4R以外的()。
涡流引起的振动频率
[单选题]Fresh water is used for the cooling of cylinder jackets and () of the marine diesel engine.
cylinder covers
[单选题]The lower end of each piston rod is reduced in diameter to fit a bore in (), this being secured to the piston rod by a nut.
the cross-head
[单选题]What is the effect of heated intake air on a diesel engine? ()
Reduces engine horsepower