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【判断题】
44 谷类蛋白质氨基酸组成中,赖氨酸含量相对较高,因此,谷类蛋白质的生物学价值动物蛋白质。A.
正确
B.
错误
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【单选题】A profit maximizing firm continues to operate even though it is losing money. It sells its product at a price of $100. From these facts we deduce that:
A.
average total cost is less than $100.
B.
average fixed cost is less than $100.
C.
marginal cost is increasing.
D.
average variable cost is less than $100.
【单选题】A profit maximizing perfectly competitive firm would never operate at an output level where
A.
it would not cover all of its variable costs.
B.
it was not earning a positive economic profit.
C.
it was not earning a zero economic profit.
D.
it was not earning an accounting profit.
【简答题】下列哪种情况不会导致高应变实测力和速度信号一峰起始比例失调? A.输入的传感器灵敏度不准确 B.弹性波速(或弹性模量)不合理 C.上部土层阻力较大 D.桩下部存在严重缺陷
【单选题】有关呼吸链的叙述,正确的是()
A.
两条呼吸链由四种酶复合体组成
B.
递电子体同时也是递氢体
C.
递氢体同时也是递电子体
D.
抑制Cyt aa3，则呼吸链中各组分都呈氧化态
E.
呼吸链的组分通常按E0由大到小的顺序排列
【简答题】英译汉:Red blood cell, RBC, erythrocyte
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