混凝土蜂窝缺陷采用的修补材料是（）。A、水泥 B、水泥砂浆 C、与配重层相同 D、以

简述加涅关于学习过程的基本观点。

论述发展地区经济，统筹区域发展的重要意义。

社会营销导向观念强调饭店经营应寻求以下几个方面的统一（）。

A.企业利益

B.环境利益

C.社会利益

D.客人利益

All known techniques for handling complex problems successfully seem to fall into one of the three classes: subdividing the problem (51) , ignoring irrelevant detail in a safe way (52) , and having an independent agent (53) the internal consistency (contextual checking). The first two provide guidelines for solving the problem, the third serves to provide early warnings. A good programming language supports all three.
In subdividing problem, some of the subproblems may be similar to the (54) problem. It leads us to a (55) solution. This (55) solution is viable provided each of the subproblems is easier to solve than the original problem.

A．check

B．original

C．perform

D．recursive

统一管理并公布全国动物疫情的机构是（）

A.国务院

B.国务院畜牧兽医行政管理部门

C.中央人民政府

D.国家动物防疫监督机构