举一反三
- The pore volume of fully saturated soil is equal to the volume of water .
- At the moment of applying load on saturated cohesive soil, who bears all the stress increase in the soil? A: Soil skeleton B: Pore water C: Both soil skeleton and pore water D: None of the above is true.
- According to the state of water in the soil, the liquid phase can be divided into ____, bound water, and free water.
- CO can cause a shift of the oxygen dissociation curve to left. At the apex of the lung, the arterial pressure is higher than alveolar pressure.
- 3. The three-phase point of water is a temperature and pressure condition under which water, ice and steam can coexist. The corresponding temperature is 0.01℃. Under this temperature, the external pressure of water is（ ） A: 101.325kPa B: 0.6106kPa C: 100kPa D: 1000kPa
内容
- 0
The water (or snow) can become acidified when a pollutant combines with______ in the air.
- 1
Which of the following is NOT part of the hydrologic cycle? A: water moving into creeks and streams following a rainstorm B: water infiltrating into the soil and bedrock C: calcium carbonate dissolving in soil water and groundwater D: water evaporating from a lake
- 2
Zone of soil moisture is a zone where water is held by molecular attraction on soil<br/>particles in the near-surface zone.
- 3
Which of the following compressions in the soil under loading cannot be ignored（） A: soil particles B: interparticle pore C: sealing gas D: water in the soil
- 4
How is food for plants made Food for plants is made ______. A: from water B: from the air in the sky C: from the soil D: from water, things in the soil and air and sunlight