不属于恶性黑素瘤中瘤细胞形态表现的为（） A.多边形 B.梭形 C.空泡形 D.泡沫

补全对话

Assistant: Can I help you?

Li Yuan:   1   

Assistant: Here are some skirts for girls.  2   

Li Yuan: It's nice, but it's too big for her, Fm afraid.

Assistant: What about that one?

Li Yuan:   3   

My daughter likes a light one.

Assistant: Here is one with light colour. Is it OK?

Li Yuan: Yes, it looks nice.  4     

Assistant: It's 100 yuan.

Li Yuan: 100!  5  .

Assistant: Well, it's a little dear, but I think it's the nicest dress in our store.

Li Yuan: OK. I'll take it.

尿中胆红素阳性，应考虑（）

A.溶血性黄疸

B.阻塞性黄疸

C.肝细胞性黄疸

D.新生儿溶血

E.胰头癌

使用原型法开发管理信息系统时，重要的外部条件是

A．仿真摸型

B．迭代修改

C．开发工具

D．建立原型

男性，32岁。餐后1小时突发上腹部剧痛，很快扩散至右下腹，疼痛呈持续性，无放射，伴有恶心呕吐。发病3小时后来院就诊。体检：血压16/9kPa(120/70mmHg)，腹平，全腹压痛，反跳痛，肌紧张，以右上腹及中上腹为甚，肝浊音界不清，肠鸣音微弱。

患者行立位腹平片检查：未见膈下游离气体，应考虑的诊断为

A．胆囊穿孔
B．乙状结肠穿孔
C．肝破裂
D．结肠肝曲肿瘤破裂
E．胃十二指肠溃疡穿孔

保安电源的作用是当400V厂用电源全部失去后，保障机组安全停运。