Which is the most common component of urinary calculi A: Cystine B: Uri acid C: Calcium oxalate D: Hydroxyapatite E: Brushite

When two drops of CaCl2 solution were added to the potassium ferrioxalate (III) solution, the solution became turbid, indicating that oxalate is in the outside of the complex.

What<br/>microstructures can be observed in Rhubarb powder? A: clusters of calcium oxalate B: vessels C: starch granules D: brown cells E: stone cells

When two drops of CaCl2 solution were added to the potassium ferrioxalate (III) solution, the solution became turbid, indicating that oxalate is in the outside of the complex. A: 正确 B: 错误