All of the following are distress signals under the Rules EXCEPT（）.

A . Serial connection B . Secure Shell C . RADIUS D . Simple Network Management Protocol E . HTTP F . Telnet

A .  Messages  B .  Software  C .  Hardware  D .  Unknow

A . A vessel trawling B . A vessel trolling C . A vessel setting nets D . A vessel tending line

A . a green star signal B . orange-colored smoke C . red flares D . the repeated raising and lowering of outstretched arm

A . A、automation procurement B . B、automation sales C . C、automation marketing D . D、automation customer service

A . electricity B . fuel C . oxygen D . heat

A . fuel B . oxygen C . heat D . electricity

A . a green star signal B . orange-colored smoke C . red flares D . the repeated raising and lowering of outstretched arm

A . Cisco proprietary B . Standards-based protocol C . Provides separate services for authentication， authorization， and accounting D . Encrypts only the password E . Uses UDP for a transport layer F . Encrypts the entire packet

A . steady rainfall B . hail storms C . thunderstorms D . tornadoes or waterspout

A . removing heat and deposits B . neutralizing acidic products C . lubricating D . improving combustion efficiency

A . All OSPF networks require the use of multiple areas B . Multiple OSPF areas must connect to area 0 C . Single area OSPF networks must be configured in area 1 D . Areas can be assigned any number from 0 to 63535 E . Area 0 is called the backbone area F . Each OSPF area need to be configured with a loopback interface

A . the continuous sounding of any fog signal apparatus B . giving five or more short and rapid blasts of the whistle C . firing a gun at intervals of about a minute D . a barrel with burning oil in it，on deck

A . Failure of proper operation of propulsion and other essential machinery, as well as electrical installation B . Failure of the proper operation of the main and auxiliary steering gear C . Failure of engineering watch arrangements to confirm to the requirements specified for the ship by Administration D . Failure of the proper operation of emergency generator, lighting, batteries and switche

A . nfsd B . ftpd C . telnetd D . pop3d

A．patients ask doctors to do more tests than necessary. B．doctors want to make more money by using newer and more expensive technology. C．doctors try to avoid being sued by their colleagues. D．doctors want to prove to their patients they are competent.

A、advertising B、sales promotions C、trade shows D、public relations E、political rallying