可逆式水泵水轮机的优点是()。
A.体积小重量轻
B.效率高
C.空化性能好
D.水力振动性能好
参考答案:A
【问题1】 能够发送SNMP请求报文并能对SNMP报文进行解析的服务为 (1) ;用以监听被管主机发送来的陷入报文的服务为 (2) 。(1)A.SNMP Service B.Task Scheduler C.Terminal Services D.SNMP Trap Service(2)A.SNMP Service B.Task Scheduler C.Terminal Services D.SNMP Trap Service
I'll go to Europe ______ next year for a holiday. [ ]
A. sometimes
B. sometime
C. some time
D. some times