原子得失电子后所形成带电微粒叫()。 A.价电子 B.独对电子 C.离子 D.中子

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问题:

原子得失电子后所形成带电微粒叫()。

A.价电子

B.独对电子

C.离子

D.中子

考点:化学分析工考试初级化学分析工初级化学分析工题库
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描述抽样的一般程序。

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ARP协议属于 (1) 协议,它的作用是 (2)

(2)处填()。

A.实现MAC地址与主机名之间的映射

B.实现IP地址与MAC地址之间的变换

C.实现IP地址与端口号之间的映射

D.实现应用进程与物理地址之间的变换

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汽机房运转层工作面平均照度标准值:混合照明为( )lx,混合照明中的一般照明为( )lx。

A.500,200;
B.400,100;
C.400,200;
D.500,100。

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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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下列属于公安边防情报机构实体的是()

A、国际刑警组织

B、军事部门

C、图书馆

D、户政部门

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