The water used in the ship's sanitation system is generally _____.
A: low temperature fresh water
B: high temperature fresh water
C: water produced by water generator
D: seawater
A: low temperature fresh water
B: high temperature fresh water
C: water produced by water generator
D: seawater
D
举一反三
- The first step of starting a cold ship is . A: Start emergency generator B: Starting cooling water system C: Start the compressed air system D: Start the daily fresh water system
- The fresh water produces fresh water _______.
- The fire water system in residential buildings and shopping malls is similar to that on ships, but the difference is that the fire-fighting water on land is generally fresh water provided by the tap water network, and the fire-fighting water on ships is generally sea water provided by_____. A: fire pump B: emergency fire pump C: daily water pump D: A or B
- About 3% of the world's water is fresh water
- The most fresh water used in China is in ( ).
内容
- 0
My teacher told me that salt water _________ (freeze) at a lower temperature than fresh water.
- 1
Fresh water ________ at a higher temperature than salt water. A: melts B: concentrates C: freezes D: resolves
- 2
In agricultural production, the theoretical basis of "Adjusting Temperature with Water" is ( ). A: Water temperature is easy to control; B: Water has a larger heat capacity; C: Water has a larger thermal diffusivity.
- 3
How much of the Earth's water is fresh water? A: 1% B: 3% C: 10% D: 30%
- 4
What percentage of Earth´s water is fresh water? A: 2,5 % B: 7 % C: 17 % D: 23 %