（）are used for distress alerting as a

1、（）scale charts are used for harbors.

（）scale charts are used for harbors.ASmallBLargeCLoranDRoute

2、Which EPIRB transmits a distress alert

Which EPIRB transmits a distress alert that is received and relayed by an INMARSAT satellite?（）AClass A EPIRBsBClass B EPIRBsCL-Band EPIRBsDCategory I EPIRB

3、Which oil is not suitable for use as s

Which oil is not suitable for use as storm oil?（）AFish oilBVegetable oilCMineral oilDAnimal oil

4、For use as protection from gas leaking

For use as protection from gas leaking from a refrigeration unit，each ship must be equipped with a（）.Aportable ventilation systemBflame safety lampCself-contained breathing apparatusDgas mask

5、（）are increasingly used as main engine

（）are increasingly used as main engine on merchant vessels, because they have a high Hp/Weight ratio.ASlow speed diesel enginesBMedium-speed diesel enginesCSteam enginesDGasoline engine

6、For ship-to-shore distress alerts, you

For ship-to-shore distress alerts, you can use（）.AINMARSAT, EPIRB and DSCBNAVTEX, NBDP and R/TCINMARSAT, VHF and SARTDEPIRB, DSC and radar