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【单选题】
下列哪一种致泻性大肠埃希菌所致的疾病很像痢疾，腹泻呈脓血便，有里急后重，故志贺样大肠埃希菌（ ）A.
肠产毒型大肠埃希菌ETEC
B.
肠侵袭型大肠埃希菌EIEC
C.
肠致病型大肠埃希菌EPEC
D.
肠出血型大肠埃希菌EHEC
E.
肠集聚型大肠埃希菌EAEC
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】If the utility for two goods "x" and "y" is measured as U = x + y, then it can be concluded that
A.
"x" and "y" are perfect substitutes.
B.
"x" and "y" are perfect complements.
C.
"x" and "y" are both bads.
D.
the indifference curves on the x,y graph will be upward sloping.
【简答题】创业者应该关注自身的资产负债表和损益表,对()的重视等同于对企业生命线的重视。
【简答题】HDL 的主要功能是
【单选题】Suppose the income-consumption curve for goods X and Y is upward sloping. If the price of good Y increases and the income-consumption curve rotates in clockwise fashion, then we know that:
A.
X and Y are complements.
B.
X and Y are both inferior goods.
C.
X and Y are substitutes .
D.
Y is an inferior good.
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