A .-0.84
B .-0.42
C .0.84
D .0.42
[单选题]为调整船舶吃水差,现由No.4舱(x1=-32m)移250t货到No.1舱(x5=45m),MTC=230t²m/cm,则船舶的吃水差改变量为()m。A.-0.184B.-0.142C.0.184D.0.142A . -0.184B . -0.142C . 0.184D . 0.142
[单选题]为调整船舶吃水差,现由No.1舱(x1=50m)移100t货到No.5舱(x5=-45m),MTC=200t.m/cm,则船舶的吃水差改变量为()m。A .-0.475B .-0.24C .0.475D .0.24
[单选题]某轮抵港前dF=5.48m,dA=6.06m,拟在No.1舱和No.4舱间移货以调平船舶吃水,查得在No.1舱加载100t首吃水变化17.59cm,尾吃水变化-7.81cm,No.4舱加载100t首吃水变化-7.58cm,尾吃水变化13.65cm,应移货的数量为()t。A .136B .141C .124D .105
[单选题]某轮将某舱重为250t的货物由底舱(z1=6m)移至二层舱(垂向移动距离z2=12m),船舶排水量Δ=12000t,由此票货物移动对船舶初稳性高度值的影响为()。A .减小0.1125mB .增加0.1125mC .减小0.125mD . D.增加0.125m
[单选题]概率P{max(X1,X2,X3,X4,X5)>15}=( )。A.0.2533B.0.2893C.0.2923D.0.2934
[单选题]假设某总体服从正态分布N(12,4),现从中随机抽取一容量为5的样本X1,X2,X3,X4,X5,则:概率P{max(X1,X2,X3,X4,X5)>
[单选题]择空舱时应重点考虑保证船舶(),便于调整船舶吃水差。A . 吃水差B . 稳性C . 纵强度D . 自由液面
[单选题]一组样本数据为x1=10.0,x2=10.1,x3=9.8,x4=10.2,x5=9.9,则该样本组平均值与极差为( )。A.10.0,0.2B.0,0.4C.10.0,0D.10.0,0.4
[问答题]设某事故树的最小割集为{X1,X3},{X1,X5},{X3,X4},{X2,X4,X5},各基本事件的发生概率分别为q1=0.01,q2=0.02,
[问答题]设某事故树的最小割集为{X1,X3},{X1,X5},{X3,X4},{X2,X4,X5},各基本事件的发生概率分别为q1=0.01,q2=0.02,