A transport layer protocol has several responsibilities, One

【名词&注释】

数据流(data stream)、急性肺栓塞(acute pulmonary embolism)、不存在(there is no)、应用程序(application)、经济周期(business cycle)、电流继电器(current relay)、是什么(what is)、端口号(port number)、尿道感染(urethra infection)

[单选题]A transport layer protocol has several responsibilities, One is to create a process-to-process (program-to-program) communication; TCP uses port (1) to accomplish this. Another responsibility of a transport layer protocol is to create a (2) and error-control mechanism at the transport level. TCP uses a sliding (3) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (4) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (5) of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver.

A. D

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学习资料：

[单选题]使继电器返回到原始状态的（）电流称为电流继电器的返回电流。

A. 最大
B. 中间
C. 额定
D. 最小

[单选题]如果单一构造面积控制下，形成多个气藏，则叫（）。

A. 复合型气藏
B. 复合型盆地
C. 复合型储集层
D. 复合型气田

[单选题]西方古典商业循环理论的研究重点是什么^{(what is)}（）

A. A.分析经济周期产生的原因B.分析经济周期导致的结果C.证明经济周期的存在D.证明经济周期的不存在

[单选题]男性，48岁。临床诊断胃癌，施行胃癌根治术。术后第2天晨7：00，体温高达38.8℃，心率110次／分，呼吸24次／分，血压130/90mmHg。最可能发生的情况是（）。

A. 伤口感染
B. 尿道感染^{(urethra infection)}
C. 腹腔脓肿
D. 急性肺栓塞
E. 急性肺不张

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