问题
单项选择题
有一对称三相负载,每相的R=86.6Ω.XL=50Ω。△接法,接在线电压为380V的电源上使用时,此时电路消耗的视在功率是()
A.1444V/A
B.1448V/A
C.2501V/A
D.4332V/A
答案
参考答案:D
有一对称三相负载,每相的R=86.6Ω.XL=50Ω。△接法,接在线电压为380V的电源上使用时,此时电路消耗的视在功率是()
A.1444V/A
B.1448V/A
C.2501V/A
D.4332V/A
参考答案:D
阅读理解。 | ||||||||||
My day starts at about 7 o'clock when Dad and Mom get up. We have breakfast at 8 o'clock. I like to eat cereal and bread. I also drink a glass of milk. Mom usually has bread, a glass of orange juice and a cup of coffee. Dad likes to have French fries, two eggs and a sausage (香肠). My sister only eats fruit. After breakfast, my sister and I put on our school uniforms (校服). I wear black pants, a white shirt and a blue sweatshirt (长袖运动衫). Mom picks us up (接) from school at 3:15 in the afternoon. We go straight home, and my sister and I watch TV or play games on the computer. | ||||||||||
根据短文内容,完成下列表格。
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