招标代理机构从业人员的（）直接影响和制约招标采购的成败。
A．素质
B．职称
C．学历
D．能力
E．规范化水平
参考答案：A, D, E
主蒸汽压力升高，汽温不变或汽压不变，汽温降低末几级叶片的蒸汽温度增大
The operation of the Internet is closely monitored by the routers. When something unexpected occurs, the event will be reported by the protocol (73) 。
A．IGMP
B．ICMP
C．IP
D．OSPF
