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问题 单项选择题 A1/A2型题

骨髓涂片中网状细胞、浆细胞、组织嗜碱细胞、淋巴细胞等增多见于（）.

A.再生障碍性贫血

B.骨髓增生异常综合征（MDS）

C.急性白血病

D.多发性骨髓瘤

E.淋巴瘤

答案

参考答案：A

解析：再生障碍性贫血的血常规与骨髓象特点为：呈正细胞正色素性贫血．可有小细胞增多。骨髓涂片中网状细胞、浆细胞、组织嗜碱细胞、淋巴细胞等均有增多。

单项选择题

The de facto standard Application Program Interface (API) for TCP/IP applications is the “sockets” interface. Although this API was developed for （71） in the early 1960s it has also been implemented on a wide variety of no-Unix systems. TCP/IP （72） Written using the sockets API have in the past enjoyed a high degree of portability and we would like the same （73） with IPv6 applications. But changes are required to the sockets API to support IPv6 and this memo describes these changes. These include a new socket address structure to carry IPv6 （74） ,new address conversion functions, and some new socket options. These extensions are designed to provide access to the basic IPv6 features requited by TCP and UDP applications, including multicasting, while introducing a minimums of change into the system and providing complete （75） for existing IPv4 applications.

A．connections 

B．protocols 

C．networks 

D．address
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单项选择题

由于长时间接触噪声导致的听阈升高、不能恢复到原有水平的称为（）。

A．一般性听力阈移

B．听力阈移

C．深度性听力阈移

D．永久性听力阈移
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