新闻的定义和区别

异位妊娠时的自体输血条件，错误的是（）

A.妊娠周数＜12周，胎膜未破

B.腹腔内出血时间＜24小时

C.镜下红细胞破坏率＜30％

D.腹腔内出血未受污染

E.每100ml回收血加3.8％枸橼酸钠20ml抗凝

如图，用刻度尺测量一透明胶带的宽度，该刻度尺的分度值是______，胶带的宽度是______cm．

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.

2（）

A．analog

B．many

C．multmedia

D．digital

亦的勒河

电力系统中的接地可分为（）、（）、（）三类。