To ensure oil purifier working in norm

1、Oil water separators are used to ensur

Oil water separators are used to ensure that ships don’t discharge oil when （） bilge water.Ato pump offBbeing pumpedCpumping outDit pumping out

2、The tool used in precision work to smo

The tool used in precision work to smooth or enlarge a slightly undersized hole, is called（）Around outBround fileCreamerDhole driller

3、In order to improve the working condit

In order to improve the working conditions of the crosshead bearings, the bearing pressure is made and the peripheral speed is made in later designs（）Asmaller, higherBhigher, smallerCsmaller, smallerDhigher, higher

4、Oil water separators are used to ensur

Oil water separators are used to ensure that ships dont discharge oil when pumping out （）.Aballast waterBboiler waterCbilge waterDsewage water

5、In reference to accidental oil polluti

In reference to accidental oil pollution，the most critical time during bunkering is when （）.Ayou first start to receive fuelBhoses are being blown downCfinal topping off is occurringDhoses are being disconnected

6、In order to keep the oil film on the c

In order to keep the oil film on the cylinder liner during the running-in period, the piston rings are slightly rounded（）Aon both the extern...