__The system of drains in a medieval city was better than those of many nineteenth century cities.

The amount of _____ that drains into rivers and streams in a geographic area determines the amount of water available for producing hydropower.

____ of people were coming out of the railway station. A: Streams B: Strains C: Steams D: Drains

Coolant lubricant can’t be poured into _______________ A: the mains drains B: ground wate C: the ground D: all of above

Coolant lubricant can’t be poured into _______________ A: the mains drains B: ground water C: the ground D: all of above

In Tender is the Night, ______ traces the decline of a young American psychiatrist whose marriage to a beautiful and wealthy patient drains his personal energies and corrodes his professional career. A: Dreiser B: Faulkner C: Fitzgerald D: Jack London

Small oil spills on deck can be prevented from contaminating any waters by （）. A: plugging all scuppers and drains B: placing floating booms around the ship C: regularly emptying all drip pans D: thoroughly draining all bunkering hose

From the pump, the oil is forced through the _____ and the oil cooler into the main oil gallery.The oil is fed from the _____, through individual passages, to the main crankshaft bearings and one end of the hollow camshaft.The cylinder walls and the teeth of many gears are lubricated by oil spray thrown off by the rotating _____.After the oil has served its purpose, it drains back to the ____ to be used again.