Ifaninflatableliferaftinflatesupsidedown，youcanrightitby（）.
A. pushingupononeside
B. standingontheCObottle，holdingthebottomstraps，andthrowingyourweightbackwards
C. gettingatleastthreeorfourmentopushdownonthesidecontainingtheCOcylinder
D. doingnothing;itwillrightitselfafterthecanopysupportsinflate
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Ifaninflatableliferaftisoverturned，itmayberightedby（）.
A. fillingthestabilizersononesidewithwater
B. releasingtheCOcylinder
C. pushingupfromunderoneend
D. standingontheinflatingcylinderandpullingonthestrapsontheundersideoftheraft
Ifaninflatableliferaftistobereleasedmanually，whereshouldtheoperatingcordbeattachedbeforethrowingtheraftoverboard?（）
A. Donotattachthecordtoanythingbutthrowitoverboardwiththeraftcontainer
B. Attachthecordtoafixedobjectontheship
C. Youshouldstandonthecord
D. Attachthecordtothespecialpadeyeontheraftdavitlauncher
Inflatableliferaftsareprovidedwith（）.
A. aVerypistol
B. atowingconnection
C. aportableradio
D. cannedmilk
Inflatableliferaftsshallbeservicedatanapprovedservicingfacilityevery12monthsornotlaterthanthenextvesselinspectionforcertification.However，thetotalelapsedtimebetweenservicingcannotexceed（）.
A. 12months
B. 15months
C. 17months
D. 18months
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