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【单选题】
下列各组韵母中只有韵头和韵腹的是（ ）A.
ao ou
B.
ua ie
C.
uo ia
D.
ie iu
E.
ei uo
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反馈参考答案：
举一反三
【简答题】采用单一卖方建立、寻求众多买者,确定网络市场的营销策略是
【多选题】The experimental research can be classified as _____, _____, _____ according to various conditions and groups?
A.
Pre-experimental research
B.
Action research
C.
The case study
D.
True experimental research
E.
Qualitive research
F.
Quasi-experimental research
【多选题】Reduction of experimental animals relies on:
A.
an analysis of experimental design
B.
applications of newer technologies
C.
the use of appropriate statistical methods
D.
control of environmentally related variability in animal housing and study areas
【单选题】质量m=2kg的质点沿x轴方向运动,若受到随位置变化的力 的作用从x=4m处移动到x=7m过程中,该力做的功?
A.
264J
B.
308J
C.
44J
D.
91J
【多选题】The structure of experimental papers includes:
A.
Introduction
B.
Experimental method
C.
Experimental results (data)
D.
Analysis of the experimental results
【单选题】Which of the following is NOT one of the broad categories of experimental designs?
A.
concurrent design
B.
preexperimental design
C.
statistical design
D.
true experimental
E.
All are broad categories of experimental designs.
【单选题】Which of the following best describes a double-blind experimental procedure?
A.
All subjects get the experimental procedure.
B.
Half the subjects get the experimental procedure, half the placebo; which they receive is known only to the experimenter.
C.
Half the subjects get the experimental procedure, half the placebo; which they receive is not known to subjects or experimenters.
D.
All subjects get the control procedure.
【单选题】________ are distinguished by the fact that the researcher can randomly assign test units to experimental groups and also randomly assign treatments to experimental groups.
A.
Preexperimental designs
B.
True experimental designs
C.
Quasi-experimental designs
D.
Statistical designs
E.
Concurrent designs
【简答题】实验法(experimental method)
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