【判断题】钢材按质量分为普通钢、优质钢和高级优质钢,其实质是按硫磷含量划分的。
【单选题】按杂质含量(品质),钢材可分为普通钢、优质钢、高级优质钢、特级优质钢,其中所谓杂质主要是指
【单选题】按照钢材的( )划分,可分为普通钢、优质钢和高级优质钢。
【单选题】Why are the Labour Party and the Conservative Party said to be 'well-oiled'?
A.
They are well-operated.
B.
They are supported financially.
C.
They are well-maintained.
D.
They own more supporters.
【单选题】He _______ live in the countryside than in the city.
【简答题】钢材按()、()等杂质含量不同,可分为普通钢、优质钢和高级优质钢。
【单选题】、钢材按( )划分,可分为普通钢、优质钢、高级优质钢和特级优质钢。