在同一总体中随机抽取多个样本,用样本来估计总体均数的95%可信区间,估计精密的是()

题型:单项选择题

问题:

在同一总体中随机抽取多个样本,用样本来估计总体均数的95%可信区间,估计精密的是()。

A.均数大的样本

B.均数小的样本

C.标准差小的样本

D.标准误大的样本

E.标准误小的样本

考点:广东住院医师全科医学医学统计方法医学统计方法题库
题型:单项选择题

用括号中所给词的适当形式填空

1. His father is a __________(success) businessman.

2. Chopin, the famous Polish __________(piano), was bom in 1810.

3. Fish can't live __________(with) water.

4. Doing morning exercise can make you __________(health).

5. Our English teacher is __________(friend) to us.

6. My little sister learns the piano by __________(she).

7. When they saw the teacher coming, they __________(take) out their books quickly.

8. Yao Ming is a famous __________(profession) basketball player.

9. Our class had great fun __________(dance) in the party.

10. The __________(foreign) can speak Chinese very well.

11. Li Lei has to run to school as __________(quick) as possible.

12. My brother __________(do) homework every day, but he __________(not do) his homework last night, and he __________(do) his homework now.

13. The year of Rabbit is coming. We should make New Year's __________(resolution).

题型:单项选择题

截止2012年,我国非公有制经济上缴国家税收的比重不断增加,95%中小企业是非公有制经济,私营企业和个体工商户从业人员共约1.6亿。这说明非公有制经济

A.为国民经济注入了活力

B.对国民经济起支配作用

C.是社会主义经济的重要组成部分

D.主要分布在第三产业,是解决就业的主渠道

题型:单项选择题

患儿2岁半,病初2天有轻微咳嗽,随后出现高热,体温达40℃,烦躁,频繁呕吐,查体:神志清楚,颈项强直,脑膜刺激征阳性,巴彬斯基征阳性;脑脊液检查外观混浊,压力增高,细胞计数2x10 10/L,以多核细胞为主,糖2.2mmol/L,蛋白质1100mg/L。(以下4题共用题干)

入院后患儿出现撞头、尖叫、烦躁不安,呕吐加重,此对应立即给予( )。

A.20%的甘露醇0.25~0.5g/kg次快速静滴

B.硬脑膜下穿刺

C.大量抗生素静滴

D.退热处理

E.镇静

题型:单项选择题

起自肱骨外上髁和尺骨,止于桡骨上部的肌是()

A.旋后肌

B.拇长展肌

C.拇短伸肌

D.拇长伸肌

E.示指固有伸肌

题型:单项选择题

运行中的变压器应做哪些巡视检查?

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