（）是反映企业经营成果的最终要素。 A.资产 B.收入 C.利润 D.营业利润

患者，男，36岁。因胃溃疡穿孔，在全麻下行毕Ⅰ式胃大部切除、腹腔引流术。术后返回病室，患者已清醒，生命体征稳定，切口敷料干燥，胃肠减压吸出暗红色血性液体50ml。

胃手术后主要的护理诊断有（）

A.自我形象紊乱

B.疼痛

C.焦虑

D.活动无耐力

E.潜在并发症感染

β受体阻滞剂治疗高血压的作用机制是（）

A.抑制肾小管对水钠的重吸收，使心排量下降

B.减慢心率，降低心排血量

C.阻滞钙离子进入平滑肌细胞，使外周血管扩张

D.直接扩张小动脉，减少外周阻力

E.以上都正确

下列哪种不是违反合同前义务的行为，不应承担缔约过失责任()

A．甲乙双方约定某日在某地订立合同，乙因故不能去而没有通知甲，造成了甲为订约往返的费用损失

B．一下雪天，某顾客去一大酒店吃饭，在踏上饭店台阶时，因台阶没有采取防滑措施而突然摔倒在地引起骨折

C．甲处有乙急需的一批存货，乙不远千里来与甲交涉，当晚，因甲管理不善仓库失火，货物全部灭失

D．甲经营一所餐馆，听说街对面乙的房子要卖给丙，由丙经营餐馆。甲为了防止将来与自己竞争，佯装与丙竞买。当丙发现房价太高退出时，甲也宣布不再购买

关于前列腺癌的MRI表现，下列哪项是错误的（）

A.MRI显示前列腺癌主要靠T2加权像

B.中央叶发现癌变较外围叶多

C.如果前列腺包膜能够显示，可肯定病变局限在前列腺内

D.肿瘤侵犯前列腺周围脂肪在T1加权像观察较好

E.前列腺癌向周围侵犯，首先向两侧侵犯

As the pace of life continues to increase, we are fast losing the art of relaxation. (1) you are in the habit of rushing through life, being on the go from morning till night, it is hard to (2) down. But relaxation is (3) for a healthy mind and body.Stress is a (4) part of everyday life and there is no way to (5) it. In fact,it is not the bad thing that it is often supposed to be. A (6) amount of stress is important to provide motivation and give (7) to life. It is only when the stress gets out of control (8) it can lead to poor performance and (9) health.The amount of stress a person can bear(10) very much on the individual. Some people are not afraid of stress, and such (11) are obviously chief material for managerial responsibilities. Others lose heart at first (12) of unusual difficulties. When exposed to stress, in (13) form, we react both chemically and physically. In fact we (14) a choice between escape and fight. But in more ancient days they made the (15) between life and death. The crises (危机)we meet today are (16) to be so extreme,but however little the stress,it requires the same response. It is when such a reaction (17) long，through continued exposure to stress，that health becomes (18) ．Such serious conditions as high blood pressure and heart diseases have (19) links with stress． (20) we canno! remove stress from our lives we need to find ways to deal with it．It would be unwise to do so even it we could．So what do you think of stressWhat is your way to deal with it.

第（15）空应选择（）

A．decision

B．promise

C．difference

D．choice