1mbar等于多少千帕？请计算280mbar等于多少千帕？50千帕等于多少mbar？
查看答案
建筑防火要求，作业场所应急照明的照度不应低于正常工作所需照度的（）%。
A. 70
B. 80
C. 90
D. 100
自助设备加钞前，要在ABIS系统中经（）审批从柜员现金箱中调出所需现金到自助设备。
A. 一级主管
B. 二级主管
C. 九级主管
D. 运营主管或运营主管授权人
Which of the following answers is the least likely reason for an engineer to choose to use route redis tribution?（）
A. To exchange routes between merged companies
B. To give separate control over routing to different parts of one company
C. To support multiple router vendors
D. To knit together an OSPF area if the area becomes discontiguou
同步电动机应用非常广泛，是因其结构简单，坚固耐用，维护方便，启动容易及成本较低。
A. 正确
B. 错误
微信支付 
支付宝支付