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【单选题】
下列哪项不是Lewis血型系统的特点A.
红细胞是吸附血浆中的Lewis物质而获得Lewis表型
B.
红细胞的Lewis表型受分泌状态的影响
C.
非分泌型则红细胞表型为Le(a-b+)
D.
ABH和Le均是同一前身物的产物
E.
是可溶性抗原存在于唾液和血浆中的血型系统
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举一反三
【单选题】患者男性,因敌百虫中毒急送医院,护士为其洗胃。禁用的洗胃液是
A.
2%~4%碳酸氢钠溶液
B.
1:15000~1:20000高锰酸钾溶液
C.
5%醋酸
D.
温开水或生理盐水
E.
蛋清水
【判断题】A monopsonist's market power enables him to hire labor at a marginal cost that is lower than the wage rate.
A.
正确
B.
错误
【判断题】For a monopsonist, the more elastic the supply of labor, the greater the difference between the marginal cost of labor and the wage rate.
A.
正确
B.
错误
【单选题】患者男性,因敌百虫中毒急送医院,护士为其洗胃。禁用的洗胃溶液是
A.
2%~4%碳酸氢钠溶液
B.
1:15000~1:20000高锰酸钾溶液
C.
5%醋酸
D.
温开水或生理盐水
E.
蛋清水
【判断题】For a monopsonist, the supply curve of a factor of production is less steep than the marginal cost curve.
A.
正确
B.
错误
【判断题】firm in a competitive factor market is a price taker. A monopsonist is a price maker.
A.
正确
B.
错误
【单选题】A monopsonist faces an upward-sloping labor supply curve. This means that his marginal expenditures on labor are
A.
greater than the wage.
B.
equal to the wage plus the increase in the wage resulting from hiring one more unit of labor hired.
C.
greater than the wage because hiring more workers requires to pay all workers more.
D.
All of the above.
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