Among the basic categories of equipmen

1、● One of the basic rules of computer s

● One of the basic rules of computer security is to change your （73） regularly.（73）A nameB computerC deviceD password

2、Among the possible causes of unexpecte

Among the possible causes of unexpected constant inclination of the floating shhip is（）.Aconsumption of on board liquidsBmiscalculation of loadsCliquid transfer through open valvesDflooding due to hull damage

3、The basic process of biological sewage

The basic process of biological sewage treatment consists of the liquor either by bubbling air through it or by agitating the surface（）AoxygenatingBoxidizingCdeoxygenatingDproportioning

4、Among the basic categories of equipmen

Among the basic categories of equipment, which of the following are used to allow the hydraulic energy to be controlled?（）Ahydraulic pumpsBvalvesChydraulic cylindersDhydraulic motor

5、The basic function of the centrifugal

The basic function of the centrifugal pump impeller is to （）.Adirectly increase the pressure of the liquid being pumpedBdirectly increase the ...

6、Deficiencies in the categories of Life

Deficiencies in the categories of Life-saving, Safety in General, Fire-fighting Appliances and Load Line （） approximately 66% of all deficiencies.Aaccount asBaccount forCaccount toDaccount of