窑尾电收尘收尘效率(),排放浓度()。
参考答案:99.99%;≤50mg/Nm3
—_________ Tony's weekend?
—It was great. [ ]
A. How was
B. What was
C. How is
D. What is
男性,64岁,无任何诱因突感上腹剧烈疼痛,持续1小时不缓解,伴恶心、呕吐,急诊心电图示Ⅱ、Ⅲ、aVF导联 ST段弓背向上抬高。其原因可能是
A.急性胆囊炎B.急性胰腺炎C.胃痉挛D.急性下壁心肌梗死E.急性前壁心肌梗死