民族分化，是指一个民族的一部分从原属民族实体中分化出来的现象，它往往是由民族内部的文化差异造成的。
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估计失血量800～1200ml()估计失血量>2100ml()估计失血量1200～1700ml()估计失血量<750ml()估计失血量1700～2100ml()
A. 急性出血后收缩压正常
B. 急性出血后收缩压60～40mmHg
C. 急性出血后收缩压80～70mmHg
D. 急性出血后收缩压70～60mmHg
E. 急性出血后收缩压<40mmHg
腹部四步触诊，胎臀在耻骨联合上方，胎背朝向母腹左前方，其胎方位是()
A. 枕左前
B. 枕右前
C. 骶左前
D. 骶右前
E. 骶右横
The character mode sales report is stored on the network drive as a .REX. You need to make changes to the report layout. Using the report builder how would you change this file?（）
A. Open the file using the menu option file->open make the changes and recompile the report.
B. Convert the file into .REP file using the report compiler make the changes and convert the file back to a .REX file.
C. Execute the R30CONV command to convert the file to a .RDF file, make the changes and convert the file back to a .REX file.
D. Choose file -> administration->compile. Convert the file to a .REP file, make the changes and convert the file back to a .REX file.
Execute the R30CONV command to convert the file to a .REP file, make the changes and convert the file back to a .REX file.
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