• 2022-06-14 问题

    I think you can _______ the diction of your letter to make it more polite. A: tweak B: classify C: incubate D: cancel

    I think you can _______ the diction of your letter to make it more polite. A: tweak B: classify C: incubate D: cancel

  • 2022-06-02 问题

    Gram staining involves the following steps like: ( ) A: Make a slide of bacteria sample to be stained. B: Add the secondary stain safranin to the slide and incubate for 1 minute. C: Rinse sample or slide with acetone or alcohol for 30 seconds and rinse with a gentle stream of water. D: Add the primary stain (crystal violet) to the sample or slide and incubate for 1 minute.

    Gram staining involves the following steps like: ( ) A: Make a slide of bacteria sample to be stained. B: Add the secondary stain safranin to the slide and incubate for 1 minute. C: Rinse sample or slide with acetone or alcohol for 30 seconds and rinse with a gentle stream of water. D: Add the primary stain (crystal violet) to the sample or slide and incubate for 1 minute.

  • 2022-06-16 问题

    What is the procedure of preparing the mixture?1)Put the carrageenan solution in a 55-60 degrees Celsius water bath.2)Incubate at 55 degrees Celsius in the dark.3)Dissolved a certain amount of gelatin and carrageenan with KCl solution in water bath.4)Add a certain amount of TG enzyme to the dissolved gelatin solution while cooling.5)Mix the gelatin solution and the carrageenan solution. A: 32154 B: 13524 C: 31452 D: 13254

    What is the procedure of preparing the mixture?1)Put the carrageenan solution in a 55-60 degrees Celsius water bath.2)Incubate at 55 degrees Celsius in the dark.3)Dissolved a certain amount of gelatin and carrageenan with KCl solution in water bath.4)Add a certain amount of TG enzyme to the dissolved gelatin solution while cooling.5)Mix the gelatin solution and the carrageenan solution. A: 32154 B: 13524 C: 31452 D: 13254

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