If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should （）.
1、The radiotelegraph alarm signal may be
The radiotelegraph alarm signal may be used to announce（）.Athat a distress message will followBa request for assistance in searching for a man overboardCan urgent warning about a cycloneDAll of the above
2、The alarm signal for engine room catch
The alarm signal for engine room catching fire is a blast of random bell follow by （）Atwo knockBthree knocksCfour knocksDfive knock
3、The （） or balance tank collects the re
The （） or balance tank collects the re-circulated fuel oil.AoverflowingBsumpCbilgeDbuffer
4、The sludge tank installed in the dies
The sludge tank installed in the diesel engine room is used to collect（）Ⅰ.sludge from the fuel oil settling tanks ad centrifugeⅡ.water that has been collected in the settling tankAⅠonlyBⅡ onlyCbothⅠand ⅡDneitherⅠor Ⅱ
5、In the emergency alarm signals, if the
In the emergency alarm signals, if the alarm or whistle two long sounds followed by one short sound for 1 minute, it is the （） emergency.Afire fightingBleakage blockingCabandon shipDintegratio
6、If diesel oil in this tank is used, th
If diesel oil in this tank is used, the （） of the oil must not exceed 120 degree F.AviscosityBflash pointCacid valueDtemperature