捣固镐夹持宽度调整机构主要由气缸、()和销轴组成。
参考答案:宽度调整块
为防止输血后发生乙型肝炎,选择输血员时,应检测哪组抗原和抗体()
A.HBcAg
B.HBsAg
C.HBsAg和抗-HBc
D.HBeg
E.HBsAg、HBeAg和抗HBc
The good service at the hotel()the poor food to some extent
A.made up for
B.made up
C.made for
D.made out