H．ow to operate oily water separator?

[单选题]In a complete oil/water separator, more oil will separate out onto the underside of these plates and travel outwards until it is free to rise into the oil collecting space Whats the meaning of "it" in the sentence above?（）A . a separatorB . oilC .

[单选题]Here some oil in the oily water separator, as a result of its lower （）, will separate and rise into the oil collection space.A . temperatureB . viscosityC . densityD . velocity

[单选题]H．ow to operate incinerator?

[单选题]H．ow to operate boiler?

[试题]H．ow to fill in Oily Handling Logbook?

[单选题]how to operate incinerator ? what kind of garbage can not be thrown into incinerator ?

[单选题]How many categories are there in water transport?（）A . 2B . 3C . 4D . Not available in the paragraph

[试题]H．ow to pump out bilge water in the engine room?

[单选题]There is no reason they should limit how much vitamin you take，( )they can

[单选题]I’m afraid there are people in the world who literally do not know how to b