题目
Asking Seller to Cover Insurance for 150% of the Invoice Value
Dear Sirs,
We are pleased to advise you that concerning your S/C No.819 for 500 sets color TV, we have issued confirmed, irrevocable L/C No.919 for US $50 000, through the Bank of China, London, valid to October 20.
Please see to it that the goods are shipped before 20th October and the insurance is to be covered for 150% of the invoice value against All Risks.We know that according to your usual practice, you insure the goods only for the 110% of the invoice value, therefore, the additional premium will be for our account.
Please arrange the insurance accordingly and inform us your shipment date after closing the insurance.
Yours faithfully,
第1题
A.trade credit
B.bank loans
C.commercial paper
D.factoring accounts receivable
第2题
A.cov(X,Y)=E[(X-EX)(Y-EY)]
B.cov(X,Y)=E[XY]
C.cov(X,Y)=E[X-Y]
D.cov(X,Y)=E[(X-EX)+(Y-EY)]
第3题
A.cov(X,Y)=cov(Y,X)
B.cov(2X,Y)=2cov(X,Y)
C.cov(X,X)=D(X)
D.D(3X)=3D(X)
第4题
A.cov(xt,ut)=0
B.cov(us,ut)=0(t≠s)
C.cov(xt,ut)≠0
D.cov(us,ut)≠0(t≠s)
第6题
A.Cov(aX,bY)=(a+b)Cov(x,y)
B.Cov(aX,bY)=abCov(x,y)
C.Cov(X1+X2,Y)=Cov(X1,Y)-Cov(X2,Y)
D.Cov(X1+X2,Y)=Cov(X1,Y)+Cov(X2,Y)
第10题
(ξ▪η)的联合概率密度,计算它们的协方差COV(ξ▪η)。
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