下列哪种室内条件适中时,有效温度与皮肤温度有一定的关系() A.气湿 B.气流 C.

题型:单项选择题 A1型题

问题:

下列哪种室内条件适中时,有效温度与皮肤温度有一定的关系()

A.气湿

B.气流

C.气温

D.辐射

E.空气清洁度

考点:公卫执业助理医师环境卫生学环境卫生学题库
题型:单项选择题 A1型题

在关系数据模型中,二维表的列称为属性,二维表的行称为______。

题型:单项选择题 A1型题

The United States has historically had higher rates of marriage than those of other industrialized countries. The current annual marriage (51) in the United States—about 9 new marriages for every 1,000 people—is (52) higher than it is in other industrialized countries. However, marriage is (53) as widespread as it was several decades ago. (54) of American adults who are married (55) from 72 percent in 1970 to 60 percent in 2002. This does not mean that large numbers of people will remain unmarried (56) their lives. Throughout the 20th century, about 90 percent of Americans married at some (57) in their lives. Experts (58) that about the same proportion of today’s young adults will eventually marry.

The timing of marriage has varied (59) over the past century. In 1995 the average age of women in the United States at the time of their first marriage was 25. The average age of men was about 27. Men and women in the United States marry for the first time at an average of five years later than people did in the 1950s. (60) , young adults of the 1950s married younger than did any previous generation in U. S. history.

53().

A. not any longer

B. no more

C. no longer

D. not any more

题型:单项选择题 A1型题

严把干部选拔任用“党风廉洁意见回复”,防止()。

A.带病提拔

B.带病上岗

C.突击提拔

D.破格提拔

题型:单项选择题 A1型题

检查系统()记录功能是否启用。

A、信息

B、设备

C、运行

D、数据

题型:单项选择题 A1型题

额定二次电流为5A的电流互感器,其下限负荷不得低于()VA

A、2.5

B、3.75

C、1.25

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