在铸铁焊补时,为了得到灰铸铁焊缝,可在焊缝中加入促进石墨化元素,如()等。
WhatisBillgoingtodo?
It____alsocreatemorefocusedteamsandlesswastedtime.
.Look,theyareclimbingupamountain,____(在它顶上屹立着一座古老庙宇)。
WhichgateisflightBA472toMadridleavingfrom?
Shewastooshytospeak____.