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【单选题】
患儿,男,2岁,神志清楚,二便正常。体格检查:头围48cm,胸围49cm,身长85 cm,该患儿的体重是A.
6kg
B.
8kg
C.
10kg
D.
12kg
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【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 eventually exceeds the body’s self-repair capabilities.
C.
0
D.
00
【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 eventually 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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