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【简答题】
电源线电压为380V时，此电动机三相定子绕组应如何正确连接?
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举一反三
【单选题】The passage shows that alchemy in the medieval time ______.
A.
established modern chemistry
B.
cured all the diseases
C.
turned base metals to gold
D.
was taken as somewhat justifiable
【单选题】The medieval church condemned man's partaking in ______ pleasures.
A.
educational
B.
ascetic
C.
asexual
D.
sensual
【单选题】Cartesian philosophy is a kind of meeting point for medieval and modern worldviews because___.
A.
it took shape in a period that stood between the Middle Ages and the Modern Age
B.
it is founded on medieval science and Renaissance worldview
C.
it attempts to ground the doctrines of Renaissance science in medieval worldview
D.
it ended medieval superstition and started modern scientific investigation
【简答题】The begins of the modern chemistry laboratory go back to the workrooms of medieval alchemists.
【单选题】The statement about the 'secularization of the medieval drama' refers to the ______.
A.
introduction of mundane matters in religious plays
B.
presentation of erudite material
C.
use of contemporary introduction of religious themes in the early days
D.
application of the medieval plays
【单选题】气相色谱用内标法测定A组份时,取未知样1.0μL,进样得组分A的峰面积为3.0cm2,组分B的峰面积为1.0cm2;取未知样2.0000g,标准样纯A组分0.2000g,仍取1.0μL进样,得组分A的峰面积为3.2 cm2,组分B的峰面积为0.8 cm2,则未知样中组分A的质量百分含量为( )
A.
0.1
B.
0.2
C.
0.3
D.
0.4
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