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问题 单项选择题 A1/A2型题

人体不同组织声衰减的程度不同，指出下面何项不妥（）

A.骨骼、钙化衰减程度多

B.肌腱、瘢痕声衰减明显

C.肝、肾、肌肉属中等

D.皮下脂肪组织属低衰减

E.肺组织（含气）衰减程度更低

答案

参考答案：E

单项选择题

当用自攻螺钉安装板材时，板材的接缝处必须安装在宽度不小于( )mm的次龙骨上。

A．20

B．10

C．40

D．50
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单项选择题

Virtualization is an approach to IT that pools and shares (86) so that utilization is optimized and supplies automatically meet demand. Traditional IT environments are often silos, where both technology and human (87) . are aligned around an application or business function. With a virtualized (88) , people, processes, and technology are focused on meeting service levels, (89) is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization (90) that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

A．content

B．position

C．power

D．capacity
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