连通且不含圈的无向图,称为()。A.道路 B.连通图 C.树 D.链

题型:单项选择题

问题:

连通且不含圈的无向图,称为()。

A.道路

B.连通图

C.树

D.链

考点:数学运筹学运筹学题库
题型:单项选择题

The ____________ is in the bathroom. [ ]

A. refrigerator

B. stove

C. shower

题型:单项选择题

高低压配电柜内补偿电容相间对地电阻需大于()兆欧。

题型:单项选择题

吊车梁的校正应在()安装并永久连接后进行。

A.柱间支承

B.钢柱

C.吊车轨道

D.屋面系统构件

题型:单项选择题

患者男,29岁。10h前突发心悸伴胸闷,后渐加重,乏力、头晕、黑蒙1次。BP90~95/45~50mmHg,脉搏细数、频率难辩,意识清醒,呼吸困难,高枕卧位,颈静脉无充盈,双肺未闻及干湿啰音,HR190次/min,律齐,心尖区第一心音强度恒定,腹部(-),双下肢不肿。心肌梗死三项(CK-MB、TNI、MYO)正常;X线胸片提示肺淤血可能;血生化:ALT66U/L、AST57U/L、CRE91μmol/L、K+4.2mmol/L。心电图示宽QRS波心动过速。

治疗首选()

A.非药物方法

B.抗心律失常药物

C.电复律

D.硝酸甘油

E.硝普钠

题型:单项选择题


Motivation is "the driving force within individuals that impels them to action." And goals are the sought-after results (1) motivated behavior.
Motivation can be either positive or negative (2) direction. We may feel a driving force toward some object or condition, (3) a driving force away from some object or condition. For example, a person may be impelled toward a restaurant to fulfill a need, hunger, and away (4) an airplane to fulfill a need of safety. Some psychologists refer to positive drives (5) needs, wants or desires, (6) negative drives as fears or aversions (7) , though negative and positive motivational forces seem to differ dramatically (8) terms of physical and sometimes emotional activity, they are basically similar in (9) they both serve to initiate and sustain human behavior. (10) this reason, researchers often refer (11) both kinds of drives or motives as needs, wants and desires.
Goals, (12) , can be either positive or negative. A positive goal is one toward (13) behavior is directed and it is often referred to as an approach object. A negative goal is (14) from which behavior is directed away and it is sometimes referred to as an avoidance object. Since both approach and avoidance goals can be considered objectives of motivated behavior, most researchers refer to (15) types simply as goals. Consider this example. A middle-aged woman may wish to remain (16) attractive as possible. Her positive goal is to appear desirable, and (17) she may use a perfume advertised to make her irresistible. A negative goal may be to prevent her skin (18) aging, and therefore she may buy and use face creams. (19) the former case, she uses perfume to help her achieve her positive goal -- attractiveness; in the (20) case, she uses face creams to help avoid a negative goal -- wrinkled skin.

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