胶体颗粒在水中能长期保持分散状态,虽经长期静置也不会自然沉降。()
参考答案:对
为了将复杂的大信息系统分解成便于理解和实现的部分,通过将过程和由它们产生的数据类分组、归并,形成 ______ 。
—What's the matter with you —After the long walk, my leg ______ and I couldn't go any further.
A. gave out B. gave offC. gave in D. gave up