Openullageholesintankswhicharenotgas-freemustbeprotectedby().
A. PVvalves
B. warningsigns
C. flamescreens
D. stop-checkvalves
()是最常见的磨损,约占磨损总量的一半。
A. 粘着磨损
B. 疲劳磨损
C. 磨料磨损
D. 腐蚀磨损
Bridgeordersmustbe()andarecordofanyrequiredchangesinspeedanddirectionshouldbekept.
A. slowlycarriedaway
B. carriedoutwithaperiodofdelay
C. promptlycarriedout
D. paidbythecaptain
Theinternationalbodyresponsiblefordraftingtheconventionprohibitingmarinepollution(MARPOL)isthe().
A. MaritimeAdvisoryCouncil
B. InternationalMaritimeOrganization
C. InternationalAssociationofShipping
D. AssociationofSeafaringNations