When loading or discharging dry mud or

1、When disassembling or assembling an in

When disassembling or assembling an injection pump plunger and barrel you should （）Akeep the parts immersed in diesel fuelBalways keep the plunger and barrel togetherCwork over a linoleum-type surfaceDall of the above

2、The discharge rate or capacity of a ce

The discharge rate or capacity of a centrifugal pump will vary directly as the （）.Achange in the impeller diameterBsquare of the impeller radiusCcube of the impeller diameterDimpeller efficiency for large changes in its size

3、When fighting an oil or gasoline fire

When fighting an oil or gasoline fire in the bilge，which of the following should NOT be used?（）AFoamBSolid stream water nozzleCAll-purpose nozzleDCarbon dioxide

4、During loading or discharging, the tal

During loading or discharging, the tallymen must make contact with（）on duty so as to solve problems in time.Aship ownerBship's officersCshippersDconsignor

5、You intend to discharge medical or haz

You intend to discharge medical or hazardous wastes ashore MARPOL annex V requires you to notify a receiving port or terminal in advance.How much advance notice require?（）A12 hoursB24 hoursC48 hoursDAdvance notification is not required

6、When planning the loading or dischargi

When planning the loading or discharging of a VLCC (100，000 DWT+) what is the most important consideration?（）ADraft and trimBLimits of the bending momentsCRate of dischargingDRate of loading