安装工在安装或(拆卸)设备前,必须做哪些准备工作?
参考答案:
检查所需工具及起重装置是否齐全完好,熟悉作业环境,排查不利安全隐患,孰知安装或(拆卸)质量标准。
SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment. A varietion of the (71) protocol called NRM is essentially the same as SDLC. SDLC is (72) protocol like HDLC, Frame Relay or X.25.An SDLC network is made up of (73) that controls all communications, and (74) . It is capable of (75) operation, but almost all practical applications are strictly half duplex.
A.a primary station
B.one or more primary stations
C.a secondary station
D.one or more secondary stations
基础竣工图的编制,应根据完整的()重新绘制