147. Which of the following is not a form of precipitation? _____ .

Which of the following solar terms is about precipitation?

The precipitation hardening processes include （） heat treatment and （） heat treatment.

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

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

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

High above the _________ , water molecules change into liquid that falls down in precipitation of rain to the earth.

Which<br/>of the following buffer solutions have the largest buffer capacity? ( ) A: 1L 0.1 M HAc solution + 1L 0.2 M NaAc solution B: 1L 0.15 M HAc solution + 1L 0.15 M NaAc solution C: 1L 0.1 M HAc solution + 1L 0.1 M NaAc solution D: 1L 0.2 M HAc solution +1L 0.1 M NaAc solution

Which of the following properties have nothing to do with the dependence of the aqueous solution? A: The vapor pressure of the aqueous solution drops B: The freezing point of the aqueous solution decreases C: Different cations in aqueous solution show different colors D: The boiling point of the aqueous solution rises