下列电离或化学方程式书写正确的是 [ ] A．Na3PO4=Na++3PO43-

____quite recently, most mothers in Britain did not take paid work outside the home．

A．Before

B．Until

C．From

D．Since

小球从斜面的顶端以初速度v₀=2m/s，加速度a=2m/s²沿斜面向下匀加速滑行，在到达斜面底端前一秒内所通过的位移是斜面长的

（1）斜面的长度？

（2）小球到达斜面底端的速度大小？

在Windows98中，内存的页面调度程序采用的页交换算法是【 】。

An application architecture specifies the technologies to be used to implement one or more information systems. It serves as an outline for detailed design, construction, and implementation. Given the models and details, include（） , we can distribute data and processes to create a general design of application architecture. The design will normally be constrained by architecture standards, project objectives, and （）. The first physical DFD,to be drawn is the （） . The next step is to distribute data stores to different processors. Data （）are two types of distributed data which most RDBMSs support. There are many distribution options used in data distribution. In the case of （），we should record each table as a data store on the physical DFD and connect each to the appropriate server.

In the case of （），we should record each table as a data store on the physical DFD and connect each to the appropriate server.

A.  storing all data on a single server

B.  storing specific tables on different servers

C.  storing subsets of specific tables on different servers

D.  duplicating specific tables or subsets on different servers

眼睛:虹膜()

A．骨头:关节

B．乔木:白桦

C．衣服:丝绸

D．手表:表带