问题
单项选择题
患者男，54岁，不明原因的消瘦，欲行大便隐血试验，试验期间宜选用的菜谱是______
A．菠菜粉丝汤 B．西湖牛肉羹 C．大蒜炒猪肝 D．蛋白炒银鱼 E．蒜苗炒羊血
答案
参考答案：D
解析： 因为动物血、肉和含叶绿素的食物中含铁元素，而便隐血检测方法是检测红细胞中的铁离子，会产生假阳性。
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患者男，54岁，不明原因的消瘦，欲行大便隐血试验，试验期间宜选用的菜谱是______
A．菠菜粉丝汤 B．西湖牛肉羹 C．大蒜炒猪肝 D．蛋白炒银鱼 E．蒜苗炒羊血
参考答案：D
解析： 因为动物血、肉和含叶绿素的食物中含铁元素，而便隐血检测方法是检测红细胞中的铁离子，会产生假阳性。
| A transport layer protocol has several responsibilities. One is to create a process-to-process (program-to-program) communication; TCP uses port (71) to accomplish this. Another responsibility of a transport layer protocol is to create a (72) and error-control mechanism at the transport level. TCP uses a sliding (73) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (74) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (75) 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．procedure
B．function
C．route
D．flow