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问题 单项选择题

在洞口安全防护中，以设置扣件扣接钢管而成的网格，并在其上满铺竹笆或脚手板的洞口尺寸是（）。

A.25mm～250mm

B.250mm～500mm

C.500mm～1500mm

D.1500mm以上

答案

参考答案：C

单项选择题

Originally introduced by Netscape Communications, (1) are a general mechanism which HTFP Server side applications, such as CGI (2) , can use to both store and retrieve information on the HTTP (3) side of the connection. Basically, Cookies can be used to compensate for the (4) nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based (5) .

A．Client

B．Editor

C．Creator

D．Server
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名词解释

常设仲裁机构
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