测算建筑物重置成本的常用方法有（） A.预决算调整法 B.重编预算法 C.指数调整法

赤壁之战

对于某些地表水、深井水、含碱性较大的水，采用（）是比较合理且经济的。

A、钠离子交换法

B、部分氢离子交换法

C、部分钠离子交换法

D、氢离子交换法

提出儿童友谊发展五阶段说的是（）。

A.科尔伯格

B.弗洛伊德

C.艾里克森

D.塞尔曼

E.皮亚杰

Rapid application development (RAD) systems purport to lighten the developer’s (46) by making it easy to program an application with simple intuitive steps.
RAD tools (47) the developer everything needed to construct a fully functional application quickly and easily. They make short work of modifying the developed product to (48) changes after the program is finished. Applications developed with RAD tools are constructed as they are envisioned. As an application’s real usefulness (49) , the developer armed with RAD tools should be able to (50) on new features with little fuss.

A．burden

B．trouble

C．task

D．weight

计算机内存是可以由CPU直接存取数据的地方。