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

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）

Which of the following items don’t belong to dock repair works?（）

During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.

Engine parameters shall be corresponded to NOx Technical Files. This is required by （）

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

（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.

Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）

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

Using a file without a handle may result in （）