站控系统应由过程PLC和操作员工作站两部分所组成。正常情况下,由中控系统实现一级控制;在故障情况下,由站控系统实现()控制。
密接式钩缓装置需要与普通自动车钩连挂时,必须采用()
高桩码头在()中沉桩,以标高控制为主,贯入度可作校核。
A. 砂性土层
B. 黏性土
C. 风化岩层
D. 淤泥土
A retail customer has just install an IBM option into their server, but the option is not working properly. Which the following should be checked to determine if the devices is supported in the server?()
A. IBM ServerProven site
B. System x Reference Library (xRef)
COG Compatibility List
D. Hardware Compatibility List (HCL)