更多"[不定项选择题]某种试验筛检乳腺癌，以活检作为验证，实际患有乳腺癌的1"的相关试题:
[不定项选择题]某种试验筛检乳腺癌，以活检作为验证，实际患有乳腺癌的1000名妇女经筛检有900名阳性，实际未患乳腺癌的1000名妇女经筛检有50名阳性。
该筛检项目的假阴性率为
A.10％
B.5％
C.90％
D.94．7％
E.95％
[不定项选择题]甲公司生产某种产品，该产品单位售价160元，单位变动成本120元，2016年度销售360万件。
2017年为扩大销售量、缩短平均收款期，甲公司拟实行“5/10、2/30、n/50”新的信用政策；采用该政策后，经测算：产品销售量将增加15%，占销售额40%的客户在10天内付款、占销售额30%的客户在30天内付款、占销售额20%的客户会在50天内付款、剩余部分的平均收款期为80天，逾期应收账款的收回需支出的收账费用及坏账损失占逾期账款金额的10%。
甲公司2016年度采用“n/30”的信用政策，其平均收款期为50天，40%的销售额在信用期内未付款，逾期应收账款的坏账损失占逾期账款金额的4.5%，收款费用占逾期账款金额的3%。假设有价证券报酬率为8%，一年按360天计算，其他条件不变。
根据上述资料，回答以下各题。
在新的信用政策下，甲公司应收账款机会成本为（ ）万元。
A.382.72
B.395.80
C.342.24
D.588.80
[不定项选择题]功能活血化瘀，善调妇女经水，为妇科要药的是
A.乳香
B.五灵脂
C.丹参
D.桃仁
E.红花
[不定项选择题]企业清仓处理某种商品，每件商品在原价的基础上打八折后再减200元，平均每件商品亏损440元。已知该商品的原价比成本高20%，问在清仓处理期间，10万元最多能购买多少件这种商品?
A.16
B.17
C.18
D.19
[不定项选择题]共用题干
American Dreams
There is a common response to America among foreign writers:the US is a land of
extremes where the best of things are just as easily found as the worst.This is a cliché（陈
词滥调）.
In the land of black and white,people should not be too surprised to find some of the
biggest gaps between the rich and the poor in the world.But the American Dream offers a
way out to everyone.________(1)No class system or government stands in the way.
Sadly,this old argument is no longer true.Over the past few decades there has been a fundamental shift in the structure of the American economy.
The gap between the rich and the poor has widened and widened.________(2)
Over the past 25 years the median US family income has gone up 18 percent.For the
top 1 percent,however,it has gone up 200 percent.Twenty-five years ago the top fifth
of Americans had an average income 6.7 times that of the bottom fifth.________
(3)
Inequalities have grown worse in different regions.In California,incomes for lower
class families have fallen by 4 percent since 1969.________(4)This has led to an
economy hugely in favor of a small group of very rich Americans.The wealthiest 1 percent
of households now control a third of the national wealth.There are now 37 million
Americans living in poverty.At 12.7 percent of the population,it is the highest percentage
in the developed world.
Yet the tax burden on America's rich is falling,not growing.________(5)There
was an economic theory holding that the rich spending more would benefit everyone as a
whole.But clearly that theory has not worked in reality.
________（4）
A.Nobody is poor in the US.
B.The top 0. 01 percent of households has seen its tax bite fall by a full 25 percentage points since 1980.
C.For upper class families they have risen 41 percent.
D.Now it is9.8 times.
E.As it does so,the possibility to cross that gap gets smaller and smaller.
F.All one has to do is to work hard and climb the ladder towards the top.
