测度数据离散程度的相对指标是( )。 A.离散系数 B.标准差 C.方差 D

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问题:

测度数据离散程度的相对指标是( )。

A.离散系数
B.标准差
C.方差
D.极差

考点:中级经济基础知识经济师中级经济基础知识
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工程量清单计价中,分部分项工程量清单综合单价由完成规定计量单位工程量清单项目所需()等费用组成。

A、人工费、材料费和机械费;

B、管理费;

C、临时设施费;

D、税金;

E、利润。

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My brother Tom was very selfish when he was a little boy.He did not want share things with other people. For example, when he bought a chocolate cake he put them in a secret place where I couldn’t find . Then he ate it all by himself. He never helped other. He said he is busy . That is, a game of tennis making him very busy. He did not care if something he did made people angry. For instance, on one night he played strong and loudly music till four o’clock on the morning. But he is difference now. He often helps grandma with housework, helps his classmates with their lessons.

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36.5 g HCl溶解在1 L水中(水的密度近似为1 g·mL-1)所得溶液的密度为ρ g·mL-1,质量分数为w,物质的量浓度为c mol·L-1,NA表示阿伏加德罗常数的数值,则下列叙述中正确的是   (  )。

A.所得溶液的物质的量浓度为1 mol·L-1

B.所得溶液中含有NA个HCl分子

C.36.5 g HCl气体占有的体积为22.4 L

D.所得溶液的质量分数:w=

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患者女性,24岁,左眼红5天后就医。检查:右眼下方球结膜充血,相应部位见一疱疹样结节,角膜透明,最可能的诊断是()

A.急性卡他性结膜炎

B.泡性结膜炎

C.滤泡性结膜炎

D.慢性结膜炎

E.过敏性结膜炎

题型:单项选择题

甲、乙、丙、丁共同投资设立合伙企业,约定利润分配比例为4:3:2:1,现甲、乙已退伙。两人退伙后丙、丁未就现有合伙企业的利润约定新的分配比例。依照法律规定,该合伙企业的利润在丙、丁之间的分配方式是( )。

A.利润的30%按2:1的比例分配,其余部分平均分配

B.按2:1的比例分配

C.平均分配

D.按丙、丁的实际出资比例分配

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