一般运行中的小型三相异步电动机，如果没有装设断相保护，在突然发生一相断电后，这台电动机( )
B
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Howmanypartsdoesascienceandtechnologypaperconsistof?Whatarethey?
句子写作：Mypresentationseemedtogowell.
Havingdecidedtorentaflat,we________contactinghousingagenciesinthecity.
Yourbikeneeds_____.You‘dbetterdoirightnow.
重写句子：NotuntilhecrossedthelineandfeltthetapesnapagainsthischestdidJohnsonknowhehadwontherace.(loosesentence)