问题
单项选择题
计算机监控系统防误闭锁功能应实现对受控站（）的实时采集，实现防误装置主机与（）的一致性。当这些功能故障时应（）。
A.电气设备位置信号、现场设备状态、发出告警信息
B.电气设备二次测量值、现场设备状态、发出告警信息
C.电气设备位置信号、现场设备状态、实现操作闭锁
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
计算机监控系统防误闭锁功能应实现对受控站（）的实时采集，实现防误装置主机与（）的一致性。当这些功能故障时应（）。
A.电气设备位置信号、现场设备状态、发出告警信息
B.电气设备二次测量值、现场设备状态、发出告警信息
C.电气设备位置信号、现场设备状态、实现操作闭锁
参考答案：A
| In most cases, you can transplant a tree successfully, at any time, if you follow the instructions for planting a tree. The most important thing is to dig out enough roots, but this process is difficult with a large tree. When you dig out the tree, leave a ball of earth around its roots. This ball of earth should measure about a foot wide for every inch of the tree trunk’s diameter. Dig deep enough to avoid cutting off too many taproots. It is wise to call in a professional tree expert to transplant a tree more than a few inches in trunk diameter. |
The best time for transplanting a tree is ______.
A．spring
B．fall
C．winter
D．any season