文书工作的组织领导，无论就全国范围还是一个机关的范围来说，均需实行（）的原则。
参考答案：集中统一管理
The reason ________ he went to California was ________ he had been looking forward to finding gold.[ ]
A. which; that
B. why; because
C. why; that
D. that; because
外墙乳液性涂料具有（）。
A.耐水性
B.耐侯性
C.耐老化性
D.耐洗刷性
E.渗透性
