A: The erosion of calcium carbonate
B: The precipitation of calcium carbonate
C: earthquakes
D: the corrosion from wind
举一反三
- The White Cliffs of Dover are composed mainly of: A: Calcium Carbonate B: Silicon Dioxide C: Mangan Oxide D: Iron Oxide
- Which of the following will you classify as bases? A: ammonium hydroxide B: potassium hydroxide C: ammonium chloride D: nitric acid E: sodium phosphate F: calcium chloride G: carbon dioxide H: calcium carbonate I: calcium oxide J: silicon dioxide
- Which of the following will you classify as acids? A: sufuric acid B: nitric acid C: ammonium hydroxide D: sodium phosphate E: calcium chloride F: carbon dioxide G: calcium carbonate H: calcium oxide I: silicon dioxide J: potassium hydroxide
- 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
- 1803a8273f88c11.png 的英文名称是______。 A: iron (II) carbonate B: ferrous carbonate C: iron carbonate D: ferric carbonate E: iron (III) carbonate
内容
- 0
1803a8274784d91.png 的英文名称是______。 A: iron (III) carbonate B: ferric carbonate C: iron (II) carbonate D: copper (II) carbonate
- 1
The formation of human body current is mainly due to ( ). A: Potassium ion B: Sodium ion C: Potassium and sodium ions D: Calcium ion
- 2
The primary buffer system that controls the pH of the blood is the __________ buffer system. A: carbon dioxide, carbonate B: carbonate, bicarbonate C: carbonic acid, carbon dioxide D: carbonate, carbonic acid E: carbonic acid, bicarbonate
- 3
The amount of calcium you eat and drink, from childhood on, is _____ to the amount of calcium in your bones A: critical B: influential C: careful D: equal
- 4
Which<br/>can be seen in CRF patient about calcium and phosphate() A: calcium↓<br/>phosphate↑ B: calcium↑<br/>phosphate↓ C: calcium↓<br/>phosphate↓ D: calcium↑<br/>phosphate↑ E: none of above