滑动门编号的原则为上行站台门编号以2开头，下行站台门编号以1开头（）

A．短路；

B．开路；

C．开关；

D．刀闸

A．A 矩形选框工具

B．椭圆选框工具

C． 单行选框工具

D．单列选框工具

A．企业负责任人

B．作业人员

C．现场负责任人

D．直接责任人员

A．①16

B．②13

C．③13A

D．④13B

A．83

B．85

C．87

D．89

A．按钮SB1~SB5

B．行程开关SQ1~SQ8

C．中间继电器KA1和KA2

D．电源开关QS

A．施工企业借用他人资质签订的

B．施工企业与建设单位串通投标.中标后签订的

C．建设工程依法必须进行招标而未招标的

D．施工企业超越资质等级与建设单位签订的

E．施工企业将其承包的部分非主体工程分包的

A．全面实行定员管理

B．以岗位缺员为前提

C．建立人岗匹配、按需用工机制

D．纳入年度用工计划报批

E．实行统一的劳动合同管理制度

is not easy to explain why one person is intelligent and another is not, or why one is cooperative and another is competitive.

Social scientists are, of course, extremely interested in these types of questions. They want to explain why we possess certain characteristics and exhibit certain behaviors. There are no clear answers yet, but two distinct schools of thought on the matter have been developed. As one might expect, the two approaches are very different from one another, and there is a great deal of debate between proponents of each theory. The controversy is often referred to as nature/nurture .

Those who support the "nature" side of the conflict believe that our personalities and behavior. patter, ns are largely determined by biological and genetic factors. That our environment has little, if anything, to do with our abilities, characteristics, and behavior. is central to this theory. Taken to an extreme, this theory maintains that our behavior. is predetermined to such a degree that we are almost completely governed by our instincts.

Proponents of the "nurture" theory, or, as they are often called, behaviorists claimed that our environment is more important than our biologically based instincts in determining how we will act. A behaviorist, B.F. Skinner, sees humans as beings whose behavior. is almost completely shaped by their surroundings. The behaviorists' view of the human being is quite mechanistic; they maintain that, like machines, humans respond to environmental stimuli as the basis of the behavior.

Neither of these theories can yet fully explain human behavior. In fact, it is quite likely that the key to our behavior. lies somewhere between these two extremes. That the controversy will continue for a long time is certain.

According to the passage, people have wondered for a long time

A. why one is different from another

B. how one has certain personalities and behaviors

C. why one is more intelligent than another

D. why one is cooperative and another is competitive