法兰与风管管壁为一体的形式,称之为“共板法兰风管”、“无法兰风管”或叫“TDF法兰风管”。
参考答案:错
My father asked me ______ with me.
A.what the matter is
B.what the mater was
C.what is the matter
D.what was the matter
分油机中修时所检查的主要部件不包括()。①水平驱动装置的蜗轮轴和齿轮壳体②垂直驱动装置③制动装置④监测设备
A.①②
B.③④
C.①②③
D.②③④