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【单选题】
直流电动机工作稳定运行状态时,电磁转矩的大小由( )决定。A.
电压的大小
B.
电枢电阻的大小
C.
负载转矩和空载转矩的大小
D.
磁场的大小
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参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】实验室多采用血浆或血清检测血糖,却不使用全血检测的原因是( )
A.
其他生化指标也用血浆或血清
B.
血细胞的糖酵解作用会使血糖浓度降低
C.
血细胞中的葡萄糖渗出使血糖浓度升高
D.
细菌污染使血糖浓度升高
E.
细菌污染使血糖浓度降低
【单选题】The history of life on earth has been a history of between living things and their surroundings.
A.
interaction
B.
intersection
C.
interference
D.
intercourse
【简答题】The history of life is a history of between living things and their surroudings.
【单选题】The history of life on earth has been a history of ____ between living things and their surroundings.
A.
introduction
B.
interview
C.
interference
D.
interaction
【简答题】The history of life on
earth has been a history of ____ between living things and their surroundings.A. introduction B. interview C. interference D. interaction
【单选题】The history of life can best be compared to
A.
A ladder
B.
A tree
C.
A rope
D.
A knot
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