Duplicate samples can also be called（）
A: Counter samples
B: sealed samples
C: confirmed samples
D: reference samples
A: Counter samples
B: sealed samples
C: confirmed samples
D: reference samples
举一反三
- Counter samples can also be called （ ）. A: duplicate samples B: sealed samples C: confirmed samples D: reference sample
- Counter samples can also be called （）
- These samples are for you to choose _____.
- Which of the following is true about the DNA samples? A: Sample 2 had more restriction sites than the other samples. B: Sample 1 is the smallest DNA fragment. C: Samples 4 and 3 are the same DNA fragment. D: Samples 1 and 2 are the same DNA fragment.
- There is a wide variety of samples in our exhibition hall.