应当首先使联轴器的晃动度、瓢偏度和轴颈的晃度都符合要求,再进行转子按联轴器找中心工作,才能使找中心的结果符合实际
参考答案:对
Why not seize it _____ you've got such a good chance?[ ]
A. now that
B. that
C. where
D. which
患儿6个月,男,诊断为肺炎。2小时前突然烦躁,喘憋加重,口鼻周紫绀,心率180次/分,心音低钝,双肺细湿啰音,肝肋下3cm,可能合并()
A.脓气胸
B.心力衰竭
C.脓胸
D.肺不张
E.肺大疱