1. Always say quot; raise fish first water quot;, then which water is needed in our fish tank (?) A. ?salary
B. ?Old water
C. ?Green water
D. ?Back water
2. ?Everyone knows that nitrification bacteria is a good oxygen, how is it in the development of the nitrification system as soon as possible?()
A. ?Place new cotton, turn on the filter circulation
B. ?Place new cotton, add nitrification bacteria, open the filter pump circulation
C. ?Place old cotton, add nitrification bacteria, open the filter pump circulation
D. ?Place old cotton, add nitrification bacteria, open oxygen pump, filter pump circulation
3. The main role of nitrifying bacteria is to eliminate what substances in water (?)
A. Nitrate
B. Ammonia nitrogen
C. Nitrite
D. Ammonia nitrogen and nitrite
4. ?New fish into the cylinder operation (?)
A. Temperature
B. Water
C. External examination
D. everything above
5. ?What is the role of aquarium salt (?)
A. Disinfection and sterilization, adjuvant treatment
B. ?Balance osmotic pressure
C. ?Purifying water
D. ?everything above
= (Xianglong Agricultural Group Fish Friends Review) =
Tianjin two son 1978
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Thank you, Im taking care of each event, Tianjin II 1978.
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Treat each event carefully, focus on the Maxima 2669
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HahaCome on // Reply @Ricky Everyday: Treat each event carefully, focus on participating in thousands of miles 2669
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