The suspension was subjected _____ four cycles of freezing and thawing and was further disrupted _____ sonication (40 s).
举一反三
- 2. The circadian rhythm can further _________ into routine cycles during the 24-hour day.
- Which of the following does not belong to concrete durability.（） A: resistance to freezing and thawing B: thermal shock resistance C: chloride resistance D: chemical resistance
- All citizens of a society are subjected to the four types of social control as described by Donald Black.
- The nutrient cycles between the living and nonliving parts of an ecosystem are called______________.（ ） A: physical cycles B: chemical cycles C: Biogeochemical Cycles D: biological cycle
- They asked for further（）(clarity) of government’s plans.