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【单选题】
典型胆囊结石声像图可见（）A.
强回声团，胆汁透声度降低
B.
强回声团及其后方的声影
C.
强回声团，胆囊壁增厚，胆汁透声度差
D.
强回声团并沿重力方向运动
E.
强回声团及后方的声影，并沿重力方向运动
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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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