搜题请搜索小程序“爱下问搜题”
问题 选择题

在动植物细胞的细胞质内都有一个非常重要的细胞器--线粒体，能将细胞内有机物氧化分解，产生二氧化碳等代谢废物，能够控制这些废物运出的结构是（　　）

A．细胞壁

B．细胞膜

C．细胞核

D．线粒体

答案

答案：B

填空题

电除尘器运行过程中烟尘浓度过大，会引起电除尘的（）现象。
查看答案
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) .

（2）是（）

A.graphics

B.processes

C.scripts

D.texts
查看答案