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16.根据支付系统无安全措施的模型填写图5-7。 (2) ( )

A. 用户
B. 商家
C. 银行
D. 信用中介

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女，56岁，有糖尿病史。发热、胸痛2天，咳少量脓痰偶带血丝。体检：体温39.5℃，呼吸24次/分，肺部无啰音。胸片示右下叶背段有淡薄浸润阴影，有透光区，血白细胞18×109/L，中性90%。应立即作哪项检查以指导用药( )

A. 血沉
B. 血电解质
C. 血培养
D. 痰细菌学检查
E. PPD试验

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Directions: Suppose your name is Wudong, write a letter to your local English-language newspaper giving your views on a discussion inspired by an article they published entitled "Why do We Need English" Your letter must be written in at least 200 words, excluding the addresses, etc. You should write dearly on ANSWER SHEET Ⅱ.