A time diagram is a diagram of the celestial sphere as observed from above the（）.

A . one zone to the east B . one zone to the west C . two zones to the east D . two zones to the west

A . be shielded from direct sunlight B . be locked into a constant heading C . have any air bubbles replaced with nitrogen D . have the compensating magnets removed

A . running fix B . dead-reckoning position C . fix D . estimated positio

A . DUS B . line timing C . loop timing D . internal timing E . through timing

A . How they finished B . How did they finished C . That how they finished D . That how did they finished

A . should stop B . would stop C . stopped D . sto

A . longitude line B . latitude line C . line of position D . fix

A . NTP updates are sent in the timezone they are collected in，and the syslog server will adjust based  on the input time. B . NTP authentication verifies the source，not the recipient. C . NTP authentication requires that the recipient has multiple strata clocks to ensure accuracy. D . Secure NTP can be configured to use SHA-1 hashing，since NTP is very insecure. E . A stratum 0 clock should be configured at the core of every network，so it can connect to an accuratetime source.

A . On the ABR router ospf 10 area 3 stub B . On all Area 3 routers router ospf 10 area 3 stub C . On all Area 3 routers router ospf 10 area 3 stub no - summary D . On the ABR router ospf 10 area 3 nssa E . On the ABR rou ter ospf 10 area 3 stub no - summary

A . when the wind is against you B . with the current setting against you C . at slack water D . with a cross current

A . L B . N C . T D . Z

A . course B . track C . heading D . course over the ground

A.An activity. B.A constraint. C.An event. D.The critical path. E.None of above.

● A(n) _____ is defined as a specified accomplishment in a particular instant in time which does not consume time or resources. A Activity B Event. C Correlation D Constant E Event constrained within planned effort.

A . at the right-hand end of the spine. B . at the end of the diagonal line (i.e. "fin"). C . on a branch of a fin. D . at the left-hand end of the spine. E . None of the above.

A、transition B、transformation C、transfer D、transmission

A．Two thousand thirty dollars. B．Two thousand fifty dollars. C．Three thousand dollars. D．Three thousand twenty dollars.

A.The Whorf Hypothesis B.A metaphoric system C.A non-standard variety D.A rich point

A．an airport where you can see the times of flights． B．a building where there is a public clock． C．the world where it is the same time in all places．