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

The president (or head) of the House of Lords in Britain is （）

Charging is the filling of the engine cylinder with a supply or charge of fresh air （） compression.

If the officer on watch is in any doubt as to the pilot’s actions，or intentions，he should （）.

Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this, you should（）.

Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this，you should（）.

With supercharging a larger mass of air is supplied to the cylinder by blowing it in under pressure, which is the best means to （） of the engine.

Whilst the engine is turning, check to see that no water is leaking into the crankcase, scavenge air belt, or from （）.

If in any doubt as to the pilot’s actions or intentions，the officer in charge of the navigational watch shall（）.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

The third officer’s duty is to（）when vessel is commanded under the pilot or captain.

Charging-air pressure increases if there is incorrect combustion and drop in the （） of the diesel engine.