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【多选题】
平均指标的作用是A.
说明总体的一般水平
B.
对不同时间、不同地点、不同部门的同质总体平均指标进行对比
C.
测定总体各单位分布的离散程度
D.
测定总体各单位分布的集中趋势
E.
在对现象总体进行分组的基础上,可以分析现象之间的依存关系
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举一反三
【单选题】－－－－ English, as a living language, ________ all the time.－－－－ Right. Who knows what it will be l
A.
2. ---- English, as a living language, ________ all the time. ---- Right. Who knows what it will be like in the years to come? A．will change
B.
is changing
C.
was changing
D.
has changed
【判断题】Now, English is used as the first language and official language in Singapore.
A.
正确
B.
错误
【单选题】Which statement is true about the relationship between cultural knowledge and language itself?
A.
Cultural knowledge is more important than language itself.
B.
Cultural knowledge is less important than language itself.
C.
Cultural knowledge is closely related to language itself.
D.
Cultural knowledge can be separated from language itself.
【简答题】如图所示的商品,主要功能是将单个耳机插孔装换为两个耳机插孔。
【简答题】The test was done in (1) , with (2) people in each group who are (3) years old. The people in the first group were given (4) . A (5) was given to the second group and a (6) was given to the...
【单选题】以下哪项符合休克代偿期临床表现的特点
A.
血压下降，脉压显著缩小，心率加快，尿量减少
B.
血压下降，脉压轻度缩小，心率加快，尿量减少
C.
血压下降，脉压无变化，心率加快，尿量正常
D.
血压轻度下降，脉压无变化，心率加快，尿量减少
E.
血压正常或稍高，脉压缩小，心率加快，尿量正常或减少
【简答题】Another test was done with slightly older infants at bedtime. In some groups the room was silent; in others recorded lullabies were played. In others a ticking metronome was operating at the heart-bea...
【简答题】second language
【简答题】The actualproduction and comprehension of the speech by speakers of a language iscalled________.A. grammarrules B. competence C. performance D. languagedevice
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