三相异步电动机星形联接时，线电压是相电压的（）倍，线电流与相电流相等。
参考答案：√3
John Black, a new client, who has been a chargeable person for a number of years, has asked you to explain the following, with reference to income tax.
(c) The implications of late payment of income tax. (3 marks)
常用的路基土方机械松土机、推土机、（）、（）、压实机械、挖土机及各种
