下列各图所示的用具中,属于省力杠杆的是[ ]
A.
B.
C.
D.
答案:A
软件没计中划分模块的一个准则是( )。
A.低内聚、低耦合 B.高内聚、低耦合C.低内聚、高耦合 D.高内聚、高耦合
Computer ( ) is a complex consisting of two or more connected computing units, it is used for the purpose of data communication and resource sharing.
A.storage
B.device
C.network
D.processor