单项选择题
In object-oriented (51) , objects can be viewed as reusable components, and once the programmer has developed a (52) of these components, he can (53) the amount of new coding required. But (52) a (54) is no simple task because the integrity of the Original software design is critical. Reusability can be a mixed blessing for user, too, as a programmer has to be able to find the object he needs. But if (55) is your aim, reusability is worth the risk.
（51）是（）
A.complexity B.creating C.indisposing D.library E.maximize F.minimize G.reading H.procedure I.productivity J.programming K.security L.using
判断题 玉石的定义：玉，石之美者，有五德：色纯、洁净、坚硬、温润、内外一致。（） 修改：___________________________________________________________
单项选择题 我国财政政策的目标是（）。
单项选择题 各种减压阀的原理是介质通过阀瓣通道小孔时阻力增大，经节流造成压力损耗从而达到减压目的，减压阀的进、出口一般要伴装（）。
