To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）

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.

（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.

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

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

（） is not installed on the main switchboar.

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

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

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

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）