支气管哮喘患者,25岁,男性,突感剧烈胸痛,呼吸困难,紫绀,首选应考虑()
A.心力衰竭
B.肺梗死
C.自发性气胸
D.肺大泡
E.心肌梗死
参考答案:C
- Do you know Mr Wang?
- Yes. He ______ many countries. He has rich life and work ______.
A.has gone to; experience
B.has been to; experiences
C.has gone to; experiences
D.went to; experience
简述判断一台射频拉远远端机故障的步骤。