| 有下列四种说法： ①“若am2＜bm2，则a＜b”的逆命题为真； ②“命题p∨q为真”是“命题p∧q为真”的必要不充分条件； ③命题“∃x0∈R使得x2-x＞0”的否定是“∀x∈R都有x2-x≤0”； ④若实数x，y∈[0，1]，则满足：x2+y2＜1的概率为
其中正确命题的个数是（ ）
|
要到微信小程序或APP查看答案哦。
实在点不开答案，可以分享到微信，
在微信里面查看答案。
APP具体操作流程为：
下列语句用来设置窗体Form1的属性，其中在运行时不能正确操作的语句是
A．Form1.Capfin="Form Test"
B．Form.Name="Form Test"
C．Form1.MaxButton=False
D．Form1.MinButton=False
胸骨角
夏枯草的利尿、降压成分目前主要认为是（）
A.钠盐
B.钾盐
C.钙盐
D.铁盐
E.锌盐
智能化仪表的核心部分是微处理器。
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.