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【单选题】
三相对称电源三角型连接时,其线电压UL与相电压UP的关系是 。A.
UL = 2UP
B.
UL = 4UP
C.
UL =UP
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举一反三
【单选题】what makes the woman afraid of getting old?
A.
having little to look forward to
B.
facing the day to retire from work
C.
lack someone to depend on
D.
physical inability and loneliness
【简答题】已知立体的主视图和俯视图,有三种不同的左视图,判断哪个是正确的?
【单选题】What makes the woman upset?
A.
She hurts her arm very badly.
B.
She is worried about the concert.
C.
She fails to get a ticket for the concert.
D.
She makes no progress in violin-playing.
【简答题】代表过渡配合松紧程度的特征值是 _ 1__ 和 2 。
【单选题】What makes the woman unhappy about?
A.
That she gets a chance to speak out.
B.
People like the convenience of cell phones.
C.
The way people use their cell phones in public places.
【简答题】是一种 运用固定的格子设计版面空间布局的 平面设计方法与风格。
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