检漏继电器及跳闸机构失灵时,所控系统可以送电。
参考答案:错
He had no pencil to _____ because he left his pencil-box at home this morning. [ ]
A. write in
B. write
C. write with
病历摘要:患者女性,45岁。持续中上腹痛3h,伴恶心、呕吐入院。体查:腹软,上腹部轻度压痛,无反跳痛,Murphy征(-)。
诊断应考虑哪些疾病?()提示:患者复查血淀粉酶890U(Somogyi法),体检时发现Grey-Turner征(+)
A.急性出血坏死性胰腺炎
B.败血症
C.合并胆囊炎
D.急性腹膜炎
E.并发胰腺囊肿
F.合并胆石症