炉内燃烧后剩余空气量的多少通常用炉膛出口处的()表示,对于一般煤粉炉其值约为()。
参考答案:过量空气系数;1.15∽1.25
__________ other students, Bill is more ___________ to the teachers.
A.Compared with; satisfied
B.Compared with; satisfactory
C.Comparing with; satisfying
D.Comparing with; satisfied
吊钩钩身特别是危险断面有疲劳裂纹时应该()。