下列特点不属于微缩文献的是（）A.信息密度大 B.成本高昂 C.体积小 D.重量轻

下列属于动物细胞工程中的工具是[ ]

A．限制性内切酶

B．DNA连接酶

C．胰蛋白酶

D．果胶酶

北宋后期，四川地区出现“交子”，这是世界上最早的纸币。 [ ]

买卖合同的效力

Multipurpose Internet MaiI Extension (MIME) is a (1) document messaging standard in the Internet enviroment, with MIME, users can send (2) E-mail messages that include audio, video, graphices, and text to any other user of a TCP/IP network. Richtext information can also be (3) into messages. It defines the fonts, formats, and (4) features of a document so the document can be easily (5) on many different types of systems.

5（）

A．restored

B．redisplayed

C．stored

D．executed

按照上述信息来计算，李先生退休时的基金缺口为( )元。

A．166376

B．167876

C．174785

D．189666