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问题 单项选择题

妻子：母亲：社会角色（）

A．水:冰:液体

B．父亲:儿子:家庭

C．冰糖:砂糖:糖精

D．石墨:余刚石:化学物质

答案

参考答案：D

解析：

种属关系的考查。社会角色中包含妻子、母亲；化学物质包含金刚石、石墨。故选D。

单项选择题

某男，28岁。持续高热15天，伴有腹胀、腹泻3～5次／日，午饭后4小时突然出现右下腹部疼痛，查体肝浊音界消失，血常规：WBC2．6×10／L，N0．80，本例患者最可能的诊断是（）

A.胃穿孔

B.急性细菌性痢疾

C.急性阑尾炎穿孔

D.伤寒并发肠穿孔

E.霍乱
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单项选择题

TCP/IP (1) layer protocols provide services to the application (2) running on a computer. The application layer does not define the application itself, but rather it defines (3) that applications need — like the ability to transfer a file in the case of HTTE In short, the application layer provides an (4) between software running on a computer and the network itself. The TCP/IP application layer includes a relatively large number of protocols, with HTTP being only one of those. The TCP/IP (5) layer consists of two main protocol options — the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP).

1（）

A.application 

B.transport 

C.link 

D.network
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