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【单选题】
It isn't so much whether he works hard; the question is whether he works ______.A.
above all
B.
in all
C.
at all
D.
after all
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反馈参考答案：
举一反三
【简答题】他们让我们提心吊胆了两个多小时。 They kept us in ___________for over two hours.
【简答题】在一个装有3个黄球和3个红球的袋子中摸球，每次摸3个球，摸到3个红球的可能性是______．
【单选题】What is aging?
A.
Aging is a genetically programmed process, playing itself out on a rigidly predetermined time schedule.
B.
a accumulation of random damage to the building blocks of life — especially to DNA, certain proteins, carbohydrates and lipids (fats) — that begins early in life and ually exceeds the body’s self-repair capabilities.
C.
0
D.
00
【简答题】竞争者一般是指那些与本企业提供的产品或服务相类似并有相似目标顾客和相似市场的企业。
【单选题】What is aging?
A.
Aging is a genetically programmed process, playing itself out on a rigidly predetermined time schedule.
B.
a accumulation of random damage to the building blocks of life — especially to DNA, certain proteins, carbohydrates and lipids (fats) — that begins early in life and ually exceeds the body’s self-repair capabilities.
【简答题】某公司现金收支平稳，预计全年现金需要量为400 000元，现金与有价证券转换成本每次为200元，有价证券利率为10%。 要求： (1)计算最佳现金持有量； (2)计算最低现金管理成本、转换成本、持有机会成本； (3)计算有价证券交易次数、有价证券交易间隔期。
【简答题】某公司现金收支平稳，预计全年现金需要量为250000元，现金与有价证券的转换成本为每次500元，有价证券年利率为10%。 求：最佳现金持有量。
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