举一反三
- A spring is an area on the surface of the Earth where the water table intersects the surface and water flows out of the ground, while a well is human-made hole that is dug or drilled deep enough to intersect the water table.
- Carrying out trade at an international level is a more （） process than domestic trade.
- The material flow can be divided into the following ( ) two categories according to whether the material flow is mainly caused by human activity A: Material biogeochemical flow and its anthropogenic flow B: Material flowing with the atmosphere and with the water body C: Material industrial and agricultural flows D: Material industry flow and consumption flow
- Taking hollow fiber membrane module as an example, according to the way of water inflow, it can be classified as outside-in type: raw water enters from the outside of membrane, and purified water flows out from the inside of membrane. On the contrary, it is inside-out type. The working pressure of the inside-out type is higher than that of the outside-in type.
- To help ease the ____, heat can be applied to the area with a hot water bottle .
内容
- 0
Coolant lubricant can’t be poured into _______________ A: the mains drains B: ground water C: the ground D: all of above
- 1
More than seventy percent of the water on the earth is sea water.
- 2
Which one is not the common source of injection water: A: surface water B: ground water C: distilled water D: oil polluted water
- 3
Taking hollow fiber membrane module as an example, according to the way of water inflow, it can be classified as outside-in type: raw water enters from the outside of membrane, and purified water flows out from the inside of membrane. On the contrary, it is inside-out type. The working pressure of the inside-out type is higher than that of the outside-in type. A: 正确 B: 错误
- 4
It’s more crowed than any other area of the city.It’s ______ of all the area in the city.