女性,56岁。近一周出现进行性黄疸,查体胆囊肿大,无压痛,该患者最可能的诊断是()
A. 急性胆管炎
B. 急性胆囊炎
C. 胰头癌
D. 胆道蛔虫
E. 急性肝炎
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()m高度以上的高层建筑在荷载组合时,应同时考虑重力荷载、水平地震作用及风荷载。
A. 30
B. 40
C. 50
D. 60
When a ship in loaded condition floats at arbitrary water line, its displacement is to the relevant mass of water displaced by the ship()
A. equal
B. larger
C. smaller
D. equivalent