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【单选题】
对称三相电路的有功功率 ,功率因数角 j 为A.
相电压与相电流的相位差角
B.
线电压与线电流的相位差角
C.
阻抗角与30 之差
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举一反三
【简答题】What does the poet express in the poem?
【单选题】When the narrator is beaten by his mother, how does the poet comfort him?
A.
He brings me to the wilderness to look at the stars
B.
He holds him in his arms and comforts him
C.
He invites him over to his house and makes him herbal tea
D.
He brings him to the race-course and together they gaze into the starry night sky
【单选题】在图样中除了物体形状的图形外,对字体也作了统一规定,其中正确的是())1字体高度代表字体号数2汉字应写成长仿宋体3字母和数字可写成直体和斜体4在同一图样土,允许用两种型式的字体
A.
①⑧
B.
①②
C.
①②③④
D.
①②③
【单选题】Why does the author mention 'poet' in the last paragraph?
A.
A poet is an example of good language users.
B.
A poet is full of great thoughts and feelings.
C.
A poet tells of the glad and sad s of his past.
D.
A poet knows more sounds and words than others.
【简答题】What does the poet think the world will end in?
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