在中性點(diǎn)不接地的三相對(duì)稱系統(tǒng)中，當(dāng)發(fā)生金屬性單相接地時(shí)，其非故障相的相對(duì)地電壓（）。
A、不變C
暫無(wú)解析
Theschoolisgoingthe________miletocreatethenextgenerationofsportingstarsthankstoitsuniquedevelopmentprogram.
Manyartistspredictthatthisbrilliantyoungactor__tobeashinningstar.
Mymotherwasdeterminedtohelpthoseinneedandshewouldhavebeenimmenselyproudofwhathasbeenachievedtheselast20years.Theitalicizedpartinthesentenceexpresses_______.
Thefanswereveryexcited______DavidBeckhamcametotheshow.
Marytiptoedoverandtooktheclockawaybecauseshehatedtohearit（）whenshewastryingtogotosleep.
