关于物资采购合同价格，按规定应由国家定价但国家尚无定价的材料，其价格应（）。A.由供

月经失调是指月经周期提前或推迟多少天以上( )

A．3天以上

B．5天以上

C．7天以上

D．8天以上

E．10天以上

Eddie was sleeping __________ Millie was reading a magazine.

A．as

B．when

C．while

D．During

Anh’s car required repairs to its steering. She took the car to Repair Limited, a local garage, to have the necessary work completed. Immediately after collecting the car, Anh was driving to the airport in order to travel to Paris on business and the steering on the car failed. As a result, Anh damaged a building adjacent to the road. The subsequent discussions with the owner of the building and the police who attended the accident delayed Anh’s onward journey, causing her to miss the flight. Anh had to pay for a new ticket.Required:

(b) Discuss the extent of liability facing Anh, Repair Limited and the engineer who repaired the steering wheel on behalf of Repair Limited. (6 marks)

女性，33岁，患风湿性心脏瓣膜病二尖瓣狭窄8年。2天前“感冒”，有发热、咽痛，咳少量痰，遂去单位医务室静滴抗生素治疗，输液1h后突然出现呼吸困难，咯粉红色泡沫痰。

该患者诊断考虑

A．风湿性心脏瓣膜病合并肺部感染

B．风湿性心脏瓣膜病合并感染性心内膜炎

C．风湿性心脏瓣膜病合并上呼吸道感染

D．风湿性心脏瓣膜病合并上呼吸道感染、急性肺水肿

结合上皮是

A．无角化鳞状上皮
B．不全角化鳞状上皮
C．正角化鳞状上皮
D．不全角化、正角化并存的鳞状上皮
E．无角化、正角化并存的鳞状上皮