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【单选题】
A constraint condition is added to the linear programming model, and the scope of feasible region will be ( ) generally.
A.
increase
B.
indefinite
C.
invariable
D.
decrease
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【单选题】The three-phase windings of the AC motor are arranged symmetrically in space, and the phase band distribution sequence should be ().
A.
A、B、C、X、Y、Z
B.
A、X、B、Y、C、Z
C.
A、Z、B、X、C、Y
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【单选题】What minority lives in the Stone Forest area?
A.
Aini People
B.
Hani People
C.
Bai People
D.
Sani People
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【单选题】胸廓入口CT检查,通常用于诊断的疾病不包括()
A.
颈胸交界处先天性病变
B.
颈胸交界处蜂窝组织炎或脓肿
C.
颈胸交界处肿瘤及肿瘤样病变
D.
颈胸交界处骨折及关节脱位
E.
颈胸交界处动脉、静脉病变及血管畸形
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【单选题】What is the most popular totem of Yi people?
A.
Spider
B.
Rooster
C.
Bull
D.
Tiger
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【单选题】颈胸交界处相关疾病中,无脉症是属于()
A.
先天性病变
B.
炎症性病变
C.
肿瘤性病变
D.
外伤性病变
E.
血管性病变
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【单选题】The number of parallel branches per phase of integer slot single-layer winding is a, and the polar logarithm is p, and the relationship between them is ().
A.
B.
C.
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【单选题】The distance between the two sides of the motor winding is called ().
A.
polar distance
B.
spacing
C.
slot pitch
D.
pitch
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【判断题】If a constraint is added to the linear programming model, the feasible region will generally be reduced; whereas a constraint is reduced, the feasible region will generally be expanded ( )
A.
正确
B.
错误
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【单选题】Which word is not proper to describe the personality of Sani people?
A.
shy
B.
enthusiastic
C.
hearty
D.
passionate
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【单选题】Three-phase AC motor, 2p =4, using double layer winding, each phase winding has () coil group.
A.
2
B.
4
C.
8
D.
12
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