液压冲击是阀门突然打开时引起的现象。
A. 对
B. 错
液压气动系统的两个参数是压力和速度,前者取决于1,后者取决于2。
Each computer or shared device found on the network is known as a.
A. server
B. workstation
C. network node
D. bridge
A is a special computer on a network that provides & controls services (resources) for other computers on the network to use.
A. workstation
B. server
C. bridge
D. switch