题目内容

变直径管,直径D1=320mm,D2=160mm,流速v1=1.5m/s,v2为()

A. 3m/s
B. 4m/s
C. 6m/s
D. 9m/s

查看答案
更多问题

以下描述正确的是:()

A. 恒定流必为均匀流;
B. 三元流动不可能是均匀流;
C. 恒定流的流线与迹线不一定重合;
D. 恒定流必为一元流。

下列哪一项关于网络层地址4a.00e0.fc00.23f3的说法是正确的?()

A. IP网络号是4a,主机号是00e0.fc00.23fe
B. IPX网络号是4a,主机号是00e0.fc00.23fe
C. IP网络号是4a.00e0,主机号是fc00.23fe
D. IPX网络号是4a.00e0,主机号是fc00.23fe

VRP支持的X.25协议封装格式有()。

A. IETF
B. ITU-T
C. 933a
DDN
E. BFE
F. IEEE802.3
G. Cisco兼容

WorkstationAhasbeenassignedanIPaddressof192.0.2.24/28.WorkstationBhasbeenassignedanIPaddressof192.0.2.100/28.Thetwoworkstationsareconnectedwithastraight-throughcablE.Attemptstopingbetweenthehostsareunsuccessful.Whattwothingscanbedonetoallowcommunicationsbetweenthehosts?()

A. Replacethestraight-throughcablewithacrossovercable
B. Changethesubnetmaskofthehoststo/25
Changethesubnetmaskofthehoststo/26
D. ChangetheaddressofWorkstationAto192.0.2.15
E. ChangetheaddressofWorkstationBto192.0.2.111

答案查题题库