【多选题】下列各项,属于销售百分比法优点的有
A.
在有关因素发生变动的情况下,原有的销售百分比仍然适用
【单选题】适用于鸡含带鸡喷雾消毒的过氧乙酸浓度是(2017 真题上106)
【单选题】In a lab in Oxford Universitys experimental psychology department, researcher Roi Cohen Ka-dosh is testing a relatively new brain-stimulation technique which may help people learn and improve their un...
【多选题】在( )的情况下,保险人可以解除保险合同。
B.
财产保险中,被保险人未按约定履行其对标的安全应尽之责任
【单选题】According to the text, what is an ethical responsibility of a research agency?
A.
To use all forms of data, as well as data obtained from any source — internal or external.
B.
Discussion about all issues surrounding the relevance and accuracy of the secondary data used with the should be done only when required by law.
C.
After a detailed ysis of secondary data has been conducted, the researcher should reexamine the collection of primary data stipulated in the proposal.
D.
Privacy related to the 's issues is not as important as safe keeping of the 's databases.
E.
B and D are valid statements.
【单选题】In the 1960s, long-term studies of primate behavior. often used as subjects tamarins, small monkeys that were thought ideal because they require only small cages, breed frequently, and grow quickly. F...
A.
The suppression of fighting between related females serves to protect their common genetic inheritance.
B.
male tamarins contribute to the care of tamarin infants.
C.
The social system of tamarins requires monogamous pairing.
D.
Male taniann monkeys do not display aggressive behavior. in the wild.
E.
The way the tamarins were kept in cages did not affect their mating behavior.
【单选题】There is only one correct sentence, and you should choose one which you believe is right.
A.
Population refers to some of set of persons that have at least one common characteristic of interest to the researcher.
B.
Sample is a smaller, unmanageable version of a larger group.
C.
Sampling is a process used in statistical ysis in which a predetermined number of observations are taken from a smaller population.
D.
Sample design refers to the plans and methods to be followed in selecting sample from the target population and the estimation technique formula for computing the sample statistics.