测量一螺线管两接线柱之间金属丝的长度。器材如下： A．待测螺线管L（符号）：绕制

从疾病生态学的角度来看，与疾病发生有关的三大因素是

A．遗传、环境、社会

B．遗传、营养、身体锻炼

C．易感性、传播途径、传染源

D．宿主、环境、致病因子

E．遗传、环境、人群

以下（）不是数字移动通信系统中减少多径快衰落的影响的措施：

A.采用合理的纠错编码（如卷积码、Turbo码等）、交织保护和重传协议，以增加信号的冗余度，并进行时间分集；

B.利用快速功控和（接收和/或发信）分集缓解功率损失；

C.使用多个Rake接收指峰进行多径分集接收，更好地集中能量

D.采用高线性功放技术保持信号输出在线性范围

刘先生和华女士谈了一年的恋爱。一次，刘先生对华女士表示，两人一年多以来感情没有什么实质性的进展，如果她真的喜欢自己就应该答应发生性关系，否则两个人就分手；并表示他若与华女士发生关系一定会娶她，会对她好的。华女士原本不愿意，但是刘先生连哄带威胁的话使她感觉到了很大的压力，两人便发生了性关系。此后刘先生对华女士越来越没有耐心，和当时追求她时判若两人。在一次冲突中，刘先生竟出手打了华女士两个耳光，事后刘先生马上道了歉，说自己很爱华女士，不把华女士当外人才会这样，表示以后一定会改的。可后来他出手打人的频率却越来越高。每次被打后，尽管感到非常伤心，但华女士还是又原谅了刘先生，心想自己已经是他的人了，他是爱我的，他会改变的，并想着也许等到两个人结婚后情况便会改善。华女士经常带着伤去上班，终于有一天，她的同事看不下去了，在同事的劝说下，华女士来找婚姻家庭咨询师。

恋爱暴力不包括以下哪种（）

A.冷暴力

B.性虐待和约会强 * *

C.身体暴力

D.精神虐待

巷道掘进注意安全事项有哪些？

A study released a little over a week ago, which found that eldest children end up, on average, with slightly higher IQ’s than younger siblings, was a reminder that the fight for self-definition starts much earlier than freshman year. Families, whatever the relative intelligence of their members, often treat the firstborn as if he or she were the most academic, and the younger siblings fill in other niches: the wild one, the flirt.

These imposed caricatures, in combination with the other labels that accumulate from the sandbox through adolescence, can seem over time like a miserable entourage of identities that can be silenced only with hours of therapy. But there’s another way to see these alternate identities: as challenges that can sharpen psychological skills. In a country where reinvention is considered a birthright, many people seem to treat old identities the way Houdini treated padlocked boxes: something to wriggle free from, before being dragged down. And psychological research suggests that this ability can be a sign of mental resilience, of taking control of your own story rather than being trapped by it.

The late-night bull sessions in college or at backyard barbecues are at some level like out-of-body experiences, allowing a re-coloring of past experience to connect with new acquaintances. A more obvious outlet to expand identity—and one that’s available to those who have not or cannot escape the family and community where they’re known and labeled—is the Internet. Admittedly, a lot of the role-playing on the Internet can have a deviant quality. But researchers have found that many people who play life-simulation games, for example, set up the kind of families they would like to have had, even script alternate versions of their own role in the family or in a peer group.

Decades ago the psychologist Erik Erickson conceived of middle age as a stage of life defined by a tension between stagnation and generativity-a healthy sense of guiding and nourishing the next generation, of helping the community. Ina series of studies, the Northwestern psychologist Dan P. McAdams has found that adults in their 40s and 50s whose lives show this generous quality—who often volunteer, who have a sense of accomplishment—tell very similar stories about how they came to be who they are. Whether they grew up in rural poverty or with views of Central Park, they told their life stories as series of redemptive lessons. When they failed a grade, they found a wonderful tutor, and later made the honor roll; when fired From a good job, they were forced to start their own business.

This similarity in narrative constructions most likely reflects some agency, a willful reshaping and re-imagining of the past that informs the present. These are people who, whether pegged as nerds or rebels or plodders, have taken control of the stories that form their identities.

In conversation, people are often willing to hand out thumbnail descriptions of themselves:" I’m kind of a hermit." Or a talker, a practical joker, a striver, a snob, a morning person. But they are more likely to wince when someone else describes them so authoritatively.

Maybe that’s because they have come too far, shaken off enough old labels already. Like escape artists with a lifetime’s experience slipping through chains, they don’t want or need any additional work. Because while most people can leave their family niches, schoolyard nicknames and high school reputations behind, they don’t ever entirely forget them.

Psychologists seem to believe that if adults want to remake their identity, they need to（）

A. tell their psychologists very similar stories about themselves

B. command the identity-forming factors themselves

C. quit their jobs and start their own business

D. hire a wonderful tutor to get themselves into the honor roll