下列哪项不属于产业间联系方式的类型（） A.单向联系和多向联系 B.顺向联系和逆向联

在“研究匀变速直线运动”的实验中所使用的电源是50Hz的交流电，某同学打好三条纸带，选取其中最好的一条，其中一段如图所示．图中A、B、C、D、E为计数点，相邻两个计数点间有四个点未画出．根据纸带可计算出各计数点的瞬时速度，则B点的速度v_B=______m/s，并计算纸带所对应小车的加速度a=______m/s²（本题结果均要求保留三位有效数字）

伸肘关节和内收肩关节的是（）

A.肱二头肌

B.肱三头肌

C.肱桡肌

D.旋前圆肌

E.旋后肌

商代的（）被看成是我国有系统文字的开始，和我们今天使用的汉字一脉相承。

在网络管理中要防止各种安全威胁。在SNMPv3中，无法预防的安全威胁是（）

A.篡改管理信息：通过改变传输中的SNMP报文实施未经授权的管理操作

B.通信分析：第三者分析管理实体之间的通信规律，从而获取管理信息

C.假冒合法用户：未经授权的用户冒充授权用户，企图实施管理操作

D.消息泄露：SNMP引擎之间交换的信息被第三者偷听

For a long time psychoanalysis was the only formalized psychotherapy practiced in Western society. It was this type of therapy that gave rise to the classic picture of a bearded Viennese doctor seated behind a patient who is lying on a couch.

Psychoanalysis is based on the theories of Sigmund Freud. (46) According to Freud’s views, psychological disturbances are due to anxiety about hidden conflicts in the unconscious parts of one’s personality; therefore, one of the psychoanalysts job is to help make the patients aware of the unconscious impulses, desires, and fears that are causing the anxiety. Psychoanalysts believe that if patients can understand their unconscious motives, they have taken, the first step toward gaining control of their problems. Such understanding is called insight.

Psychoanalysis is a slow procedure. It may take years of fifty-minute sessions several times a week before the patient is able to make fundamental changes in her life. (47) Throughout this time, the analyst assists his patient in a complete examination of the unconscious motives behind her behavior. This task begins with the analyst telling the patient to relax and talk about everything that comes into her mind. This method is called free association.

As the patient lies on the couch, she may describe her dreams, discuss private thoughts, or recall long-forgotten experiences. The psychoanalyst often says nothing for long periods of time. (48) The psycho-analyst also occasionally makes remarks or asks questions that guide the patient, or he may suggest an unconscious motive or factor that explains something the patient has been talking about, but most of the work is done by the patient herself.

Psychoanalysis has sometimes been criticized for being" all talk and no action." In behavior therapy there is much more emphasis on action. (49) Rather than spending a large amount of time going into the patient’s past history or the details of his or her dreams, the behavior therapist concentrates on finding out what is specifically wrong with the patient’s current life and takes steps to change it. The idea behind behavior therapy is that a disturbed person is one who has learned to behave in the wrong way. The therapist’s job, therefore, is to "reeducate" the patient. (50) The reasons for the patient’s undesirable behavior are not important; what is important is to change the patient’s behavior which is formed and reinforced in stressed environment and to establish new patterns of behavior for the patient.

One technique used by behavior therapists is systematic recovery. This method is used to overcome irrational fears and anxieties the patient has learned. The goal of systematic recovery therapy is to encourage people to imagine the feared situation while relaxing. Having been taught how to relax, the patient learns to think about the past experience without being afraid. During this process, the therapist attempts to replace anxiety with its opposite, relaxation.

(49) Rather than spending a large amount of time going into the patient’s past history or the details of his or her dreams, the behavior therapist concentrates on finding out what is specifically wrong with the patient’s current life and takes steps to change it.