毒理学鼻祖Paracelsus提出"剂量决定毒物"，即所有物质都有一定毒性，惟有剂量

基金管理人未能按规定召集或不能召集时，基金托管人有权召集基金持有人大会。

质量为20kg的水，温度从25℃升高到45℃，需要吸收多少焦的热量？[水的比热容为4.2×10³J/（kg•℃）]．

某杂志为扩大销量，精心炮制了某著名影星甲的一段绯闻，给甲带来了极大的精神痛苦。甲将该杂志告到法院，下列责任方式不适用于该案的是(）。

A．赔偿损失

B．消除影响、恢复名誉

C．赔礼道歉

D．排除妨碍

禁止发布房地产广告的是( )。

A．在划拨土地上开发建设的房地产
B．已设定抵押的房地产
C．未取得商品房预售许可证的房地产
D．没有选聘物业管理企业的房地产

Frame Relay is simplified form of (66) , similar in principle to (67) , in which synchronous, frames of data are routed to different destinations depending on header information.

Packets are routed throught one or more Virtual Circuits known as (68) . Most Virtual Circuits are (69) , which means that the network provider sets up all DLCI connections at subscription time. (70) are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

67（）

A．X.21

B．X.25

C．X.28

D．X.29