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【简答题】
当电源的电压等于负载的额定电压时，三相负载采用三角形连接方式。
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举一反三
【简答题】什么是效度? 什么是信度?
【多选题】Which of the following topics are appropriate for opinion paragraphs?
A.
My most valuable possession is an old and blond guitar.
B.
Death penalty should be activated in every country of the world.
C.
Government should forbid the same-sex marriage.
D.
There are several reasons why the pollution in ABC town is worst in the country.
E.
Internet access should be limited to students under the age of 18.
F.
There are several characteristics which distinguish plants from animals.
【单选题】65 Which of the following is referred to as sunk cost:
A.
management reserve
B.
contingency fund
C.
cost budgeted for construction under water
D.
expended funds over which there is no further control
E.
forecasted budget over-runs
【单选题】关于顺磁性对比剂的描叙，错误的是
A.
低浓度时，主要使T1缩短
B.
高浓度时，主要使T2缩短
C.
常用T1效应作为T1WI中的阳性对比剂
D.
顺磁性金属元素，其化合物的水溶液无顺磁性
E.
浓度高时，出现超过T1效应，使MR信号降低
【多选题】列宁对十九世纪末二十世纪初世界历史的判断有()
A.
资本主义发达国家已经进入到帝国主义阶段
B.
经济政治发展不平衡已成为资本主义发展的绝对规律
C.
民族矛盾成为资本主义世界的又一重大矛盾
D.
社会主义革命可能在一国或数国首先发生并取得胜利
【多选题】Which 4 of the 7 statements describe the main features of the graph
A.
The number of graduates fell between 1996 and 1998.
B.
The overall rise in numbers was not always steady.
C.
Just under 75,000 male students graduated in 1992.
D.
more women than men graduated between 1992 and 2007.
E.
In 2007, there were nearly 150,000 female graduates.
F.
The gap between the number of male and female graduates widened over the period.
G.
The trends for male and female graduates were similar.
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