A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）

Under MARPOL Code the ship to which it applies has to carry （）

The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）

If separating effect is not good, which measure should be taken （）

The shipboard oil pollution emergency plan will be invalid after （）

When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）

The ISPS Code consists of a mandatory section-Part A, which shows（）