In a domestic fresh water system, the pump starters are controlled by （） switches which operate when the pressure in the tank varies within predetermined limits as water is drawn off.
Please supply 200 tons of fresh water（）my ship.
Vessel（）still to bunker 50 tones of fresh water.
The main engine is cooled with fresh water （）is added suitable small quantities of chemicals to prevent corrosion.
If a small electric motor is immersed in salt water it should be （） (1) washed in fresh water (2) dried in an oven
Most air conditioning units have （） for adjusting the ratio of recirculated fresh airCare must be taken not to reduce the fresh air so that stuffiness or smells arise.
Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
The motor for the fresh water pump （）.
（）provides strength and strong space for fule,lubricating oil,fresh water,salt(ballast)water and potable water.
There will usually be summaries or daily account tables for heavy oil, diesel oil, lubricating oil, and fresh water, which will be compiled（）
You should not divide the fresh water（）three trips.
Before marine sewage treatment plant works （） should be filled with fresh water.
In a vacuum boiling evaporator, the fresh water generated is pumped out by （）.
Prior to getting underway in fresh or brackish water，the Master must（）.
In reaching a decision of detention，the port State control officer will have regard to （），making an allowance for fair wear and tear over the minimum acceptable scantlings.
Which statement concerning the collection of fresh water is FALSE?（）
________ in the fridge, the garlic will remain fresh and tender for a few months.
Scientists are working on the __________ of salt water into fresh water.
__________most of the earth‘s surface is covered by water， fresh water is very rare and precious．
One of the most important lakes in the United States is______, which is the largest fresh water lake in the world.
The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking waters not safe. Mr. Engelman says there are problems all over the world because of diseases, such as cholera, which are carried in water. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.
听力原文：W: Jane is really disappointed. She was expecting Bob to bring fresh fish for tonight's dinner.
There gion was once（)with many fresh water lakes.
