简述液力偶合器的标准要求。
参考答案:
外壳及泵轮无变形、损伤或裂纹;运转无异响;易熔合金塞完整。
患者女,42岁,因“面部浸润性斑块6个月”来诊。查体:面部散在大小不等的浸润性斑块,粉红或红褐色,偶见形成环状。
如要确诊此病,还需要做的检查是()。
A.狼疮带试验
B.组织病理学
C.自身抗体
D.抗酸染色
E.血清IgE抗体测定
F.细菌培养
The little girl________the bus as soon as it stopped,but to her disappointment,there were no seats left.
A.got on
B.got out of
C.got off
D.got to