皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【简答题】
The Baker family come from Oxford, but normally they live in London. At the moment, they are living in America. John Baker works for a large clothing company and he's working in the company's American office in San Francisco f o r two years. Anne, his wife, is actually American. She's a photographer and now she has got a temporary job with The New York Times. She worked for The Times twenty years ago but stopped when the Children, Tom, 16, and Betty, 14, were born. The children are enjoying their two years abroad and Tom has already been accepted on the school football team. The fa mi ly like living in America and this summer they have had barbeques almost every weekend. John has invited his colleagues and their families, so the Bakers have made a lot of friends. Betty is learning to wind-surf. One of John's colleagues has a son who is teaching her, and she spends most of her free time at the beach and in the water. While they are in America, the Bakers are living in a house near the beach.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】三相电路中,每相负载两端的电压为负载的___,每相负载的电流称为___。
【判断题】(    )三相对称负载三角形连接,每相负载电阻10Ω,接在380V线电压的三相交流电路中,电路的线电流为38A。
A.
正确
B.
错误
【多选题】用检查表法进行评价是一个较为普遍的初步评价方法,该方法可用于()。
A.
系统评价
B.
单元评价
C.
整装评价
D.
部分评价
【判断题】三相对称负载三角形连接,每相负载电阻10Ω,接在380V线电压的三相交流电路中,每相负载流过的相电流为38A。
A.
正确
B.
错误
【简答题】三相负载端线中的电流称为 ,每相负载中的电流称为 。
【单选题】门静脉的正常压力为
A.
0.49~1.27kPa
B.
2.35~3.43kPa
C.
2.94~3.92kPa
D.
1.27~ 2.35kPa
E.
1.27~3.43kPa
【简答题】在三相负载的星形连接中,流过每根相线的电流,称为( )电流,流过每相负载的电流,称为( )电流
【简答题】[习题1.27] 证明:(a+b,b+C,c+a)=2(a,b,c)。
【单选题】Which doesn’t belong to the superstructure?
A.
forecastle
B.
poop
C.
bridge
D.
Engine room
【判断题】三相四线制电路中,每相负载均相同,称为对称三相负载。负载的中性线电流不为零。
A.
正确
B.
错误
相关题目:
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题