按照给定的程序自动地进行切割的气割机是光电跟踪气割机。( )
参考答案:错
— Why on earth didn’t you answer the door?
— I’m terribly sorry, but the telephone _______, too.
A.is ringing
B.was ringing
C.rang
D.was about to ring
10kV线路施工验收按隐蔽工程、中间验收、竣工验收三个程序逬行