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【单选题】
设 N A 代表加德罗常数.下列说法正确的是 （ ）A.
2.9 g 2CaSO 4 ·H 2 O中含有的结晶水分子数为0.02 N A
B.
30 g乙酸和葡萄糖的混和物中含碳原子数为 N A
C.
在铁与硫的反应中，1 mol铁失去的电子数为3 N A
D.
62 g Na 2 O溶于水后所得溶液中含有的O 2 － 数为 N A
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反馈参考答案：
举一反三
【判断题】Stereotyping is more broadly used to refer to negative or positive judgments made about individuals based on any observable or believed group membership.
A.
正确
B.
错误
【单选题】A group of individuals or organizations sharing one or more characteristics that cause them to have relatively similar product needs is called:
A.
market universe
B.
market segment
C.
aggregated market
D.
segmentation base
E.
population sample
【简答题】试将下列数值转换为十进制数。 (1)(11011.11)2 (2)(321.4)8
【单选题】For gathering data about individuals or groups at different developmental levels, researchers can use two related research designs: longitudinal and cross-sectional. A longitudinal study is one that m...
A.
The subjects may become irritated at repeated testing.
B.
The participants in the study may not stay in one place for many years.
C.
The behavior. of a subject in the study may be measured continuously for many years.
D.
Social changes may be reflected in the behaviors of the subjects participating in the study.
【判断题】People is the soul of the organization because people work to achieve the target of organization and organization works to fulfill the needs of individual or group of individuals.
A.
正确
B.
错误
【简答题】题1.7将下列十进制数转换为等值的二进制数和十六进制数。 (1) ;
【单选题】( ) refers to the influence that a peer group, observers or individuals exerts which encourages others to change their attitudes, values, or behavior to conform the group norms.
A.
Mass pressure.
B.
Group power.
C.
Peer pressure.
D.
Small group situations.
【判断题】Stereotyping is more broadly used to refer to negative or positive judgments made about individuals based on any observable or believed group membership.
A.
正确
B.
错误
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