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问题 单项选择题

患者，男，52岁，矮胖，查体肺下界在锁骨中线、腋前线、肩胛下角线分别为第5、第 7、第9肋间隙，左右肺下界大致相同，最可能的原因是

A．胸腔积液
B．肺气肿
C．气胸
D．正常状态
E．心包积液

答案

参考答案：D

单项选择题

With hundreds of millions of electronic transactions taking place daily, businesses and organizations have a p incentive to protect the (66) of the data exchanged in this manner, and to positively ensure the identities of those involved in the (67) . This has led to an industry-wide quest for better, more secure methods for controlling IT operations, and for deploying p security (68) deeply and broadly throughout networked infrastructures and client devices. One of the more successful concepts to engage the imaginations of the security community has been the development of standards-based security. (69) that can be incorporated in the hardware design of client computers. The principle of encapsulating core security capabilities in (70) and integrating security provisions at the deepest levels of the machine operation has significant benefits for both users and those responsible for securing IT operations.

A．documents

B．chips

C．appliances

D．means
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单项选择题

设计隧道衬砌断面主要解决（）3个问题。

A、净空、建筑限界和跨度

B、内轮廓线、轴线和净空

C、内轮廓线、轴线和厚度

D、净空、轴线和厚度
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