Transporting the trash to the rural areas is considered as______.
A: an effective solution
B: a costly solution
C: a dangerous solution
D: a feasible solution
A: an effective solution
B: a costly solution
C: a dangerous solution
D: a feasible solution
举一反三
- Fehling's solution consists solution of A and B, a solution of ____, and a solution of potassium sodium copper tartrate.
- The sequence of reagents used in Gram staining is () A: Safranin solution → iodine solution → alcohol →<br/>crystal violet B: crystal violet → alcohol → iodine solution → Safranin<br/>solution C: Crystal violet → iodine solution → alcohol → Safranin<br/>solution D: Safranin solution → alcohol → crystal violet → iodine<br/>solution E: Safranin solution → crystal violet → iodine solution →<br/>alcohol
- Compared with plasma, which solution belongs to isotonic solution? ( ) A: 9 g•L-1 NaCl solution B: 90 g•L-1 NaCl solution C: 10 g•L-1 glucose solution D: 6.25 g•L-1 NaHCO3 solution
- ______is an effective long-term solution to water problem.
- What is a particularly effective solution to the problem