A.A study has shown that only 25 percent of the broken furniture claims that the company has honored in the last five years were due to manufacturing defects.
B.The $2 million that the company expends on the money-back guarantee represents only 4 percent of the company's total costs.
C.A popular consumer magazine gave the furniture company its highest rating for overall quality of product.
D.The company's largest competitor has a more restrictive money-back guarantee that covers only furniture broken due to manufacturing defects within six months of purchase.
E.Customers cite the money-back guarantee as the primary reason they buy furniture from this company.
第2题
唯一能通过胎盘的Ig,发挥天然被动免疫功能的Ig是
A.IgG
B.IgA
C.IgE
D.IgD
E.IgM
第4题
主要Ig的特性和功能中,"唯一能通过胎盘的Ig,发挥天然被动免疫功能"属于
A.IgG
B.IgM
C.IgA
D.IgD
E.IgE
第9题
IgG是唯一能通过胎盘的Ig类别,大量IgG通过胎盘发生在妊娠后期。
新生儿血清IgG水平
A.明显低于正常成人
B.足月新生儿较其母体高5%~10%
C.与正常成人相似
D.未成熟儿高于成熟儿
E.以上都不是
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