有关多发性骨髓瘤说法，正确的是（）。

A.外周血中异常浆细胞必须超过20%

B.大多数患者血清免疫电泳可见大量IgM型的M蛋白

C.骨髓象中可找到含有Russel小体的异常浆细胞

D.外周血中出现缗钱状排列的红细胞即可诊断本病

E.有多发性骨髓瘤患者的尿液中均能找到本周蛋白

OOP languages that create objects, such as (1) and (2) are beginning to take hold as viable tools for programmers. To effectively reuse objects, programmers need a place to store them such as an ODBMS or a RDBMS with object oriented extensions.
Databases that handle object data not only let user store and retrieve (3) data, but also let them store objects created by OOP languages, to facilitate rapid software development and reuse, and let them (4) new multimedia applications combining multiple data types.
RDBMS vendors have developed new extensions to existing DB technology to accommodate the most common forms of (5) data.

A. C++ B. BASIC C. PASCAL D. structured