Signaling devices required on inflatab

1、Required lifesaving equipment on exist

Required lifesaving equipment on existing vessels may becontinued in use on the vessel if（）.Akept on board no more than 2 yearsBinspected and serviced every 6 monthsCdestroyed if more than 5 years oldDmaintained in good and serviceable conditio

2、Each EPIRB required on a ship shall be

Each EPIRB required on a ship shall be tested using the integrated test circuit and output indicator every（）.AweekBtwo weeksCmonthDtwo month

3、Emergency escape breathing device on b

Emergency escape breathing device on board shall have a duration of service no less than（）.A20 minutesB15 minutesC10 minutesD5 minute

4、Signaling devices which are required o

Signaling devices which are required on inflatable liferafts include（）.Aa rocket shoulder rifleBan oil lanternCred flaresDan air hor

5、Each EPIRB required on an OSV shall be

Each EPIRB required on an OSV shall be tested using the integrated test circuit and output indicator every（）.AweekBtwo weeksCmonthDtwo month

6、Class A EPIRBs are required on（）.

Class A EPIRBs are required on（）.Aself-propelled，inspected vesselsBtowing vesselsCrecreational vesselsDuninspected passenger vessel